Root/Documentation/devices.txt

Source at commit b386be689295730688885552666ea40b2e639b14 created 11 years 11 months ago.
By Maarten ter Huurne, Revert "MIPS: JZ4740: reset: Initialize hibernate wakeup counters."
1
2            LINUX ALLOCATED DEVICES (2.6+ version)
3
4         Maintained by Alan Cox <device@lanana.org>
5
6              Last revised: 6th April 2009
7
8This list is the Linux Device List, the official registry of allocated
9device numbers and /dev directory nodes for the Linux operating
10system.
11
12The latest version of this list is available from
13http://www.lanana.org/docs/device-list/ or
14ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
15newer than the one distributed with the Linux kernel.
16
17The LaTeX version of this document is no longer maintained.
18
19This document is included by reference into the Filesystem Hierarchy
20Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
21
22Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
23platform only. Allocations marked (68k/Atari) apply to Linux/68k on
24the Atari platform only.
25
26The symbol {2.6} means the allocation is obsolete and scheduled for
27removal once kernel version 2.6 (or equivalent) is released. Some of these
28allocations have already been removed.
29
30This document is in the public domain. The author requests, however,
31that semantically altered versions are not distributed without
32permission of the author, assuming the author can be contacted without
33an unreasonable effort.
34
35In particular, please don't sent patches for this list to Linus, at
36least not without contacting me first.
37
38I do not have any information about these devices beyond what appears
39on this list. Any such information requests will be deleted without
40reply.
41
42
43      **** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
44
45To have a major number allocated, or a minor number in situations
46where that applies (e.g. busmice), please contact me with the
47appropriate device information. Also, if you have additional
48information regarding any of the devices listed below, or if I have
49made a mistake, I would greatly appreciate a note.
50
51I do, however, make a few requests about the nature of your report.
52This is necessary for me to be able to keep this list up to date and
53correct in a timely manner. First of all, *please* send it to the
54correct address... <device@lanana.org>. I receive hundreds of email
55messages a day, so mail sent to other addresses may very well get lost
56in the avalanche. Please put in a descriptive subject, so I can find
57your mail again should I need to. Too many people send me email
58saying just "device number request" in the subject.
59
60Second, please include a description of the device *in the same format
61as this list*. The reason for this is that it is the only way I have
62found to ensure I have all the requisite information to publish your
63device and avoid conflicts.
64
65Third, please don't assume that the distributed version of the list is
66up to date. Due to the number of registrations I have to maintain it
67in "batch mode", so there is likely additional registrations that
68haven't been listed yet.
69
70Fourth, remember that Linux now has extensive support for dynamic allocation
71of device numbering and can use sysfs and udev to handle the naming needs.
72There are still some exceptions in the serial and boot device area. Before
73asking for a device number make sure you actually need one.
74
75Finally, sometimes I have to play "namespace police." Please don't be
76offended. I often get submissions for /dev names that would be bound
77to cause conflicts down the road. I am trying to avoid getting in a
78situation where we would have to suffer an incompatible forward
79change. Therefore, please consult with me *before* you make your
80device names and numbers in any way public, at least to the point
81where it would be at all difficult to get them changed.
82
83Your cooperation is appreciated.
84
85
86  0 Unnamed devices (e.g. non-device mounts)
87          0 = reserved as null device number
88        See block major 144, 145, 146 for expansion areas.
89
90  1 char Memory devices
91          1 = /dev/mem Physical memory access
92          2 = /dev/kmem Kernel virtual memory access
93          3 = /dev/null Null device
94          4 = /dev/port I/O port access
95          5 = /dev/zero Null byte source
96          6 = /dev/core OBSOLETE - replaced by /proc/kcore
97          7 = /dev/full Returns ENOSPC on write
98          8 = /dev/random Nondeterministic random number gen.
99          9 = /dev/urandom Faster, less secure random number gen.
100         10 = /dev/aio Asynchronous I/O notification interface
101         11 = /dev/kmsg Writes to this come out as printk's
102         12 = /dev/oldmem Used by crashdump kernels to access
103                    the memory of the kernel that crashed.
104
105  1 block RAM disk
106          0 = /dev/ram0 First RAM disk
107          1 = /dev/ram1 Second RAM disk
108            ...
109        250 = /dev/initrd Initial RAM disk
110
111        Older kernels had /dev/ramdisk (1, 1) here.
112        /dev/initrd refers to a RAM disk which was preloaded
113        by the boot loader; newer kernels use /dev/ram0 for
114        the initrd.
115
116  2 char Pseudo-TTY masters
117          0 = /dev/ptyp0 First PTY master
118          1 = /dev/ptyp1 Second PTY master
119            ...
120        255 = /dev/ptyef 256th PTY master
121
122        Pseudo-tty's are named as follows:
123        * Masters are "pty", slaves are "tty";
124        * the fourth letter is one of pqrstuvwxyzabcde indicating
125          the 1st through 16th series of 16 pseudo-ttys each, and
126        * the fifth letter is one of 0123456789abcdef indicating
127          the position within the series.
128
129        These are the old-style (BSD) PTY devices; Unix98
130        devices are on major 128 and above and use the PTY
131        master multiplex (/dev/ptmx) to acquire a PTY on
132        demand.
133
134  2 block Floppy disks
135          0 = /dev/fd0 Controller 0, drive 0, autodetect
136          1 = /dev/fd1 Controller 0, drive 1, autodetect
137          2 = /dev/fd2 Controller 0, drive 2, autodetect
138          3 = /dev/fd3 Controller 0, drive 3, autodetect
139        128 = /dev/fd4 Controller 1, drive 0, autodetect
140        129 = /dev/fd5 Controller 1, drive 1, autodetect
141        130 = /dev/fd6 Controller 1, drive 2, autodetect
142        131 = /dev/fd7 Controller 1, drive 3, autodetect
143
144        To specify format, add to the autodetect device number:
145          0 = /dev/fd? Autodetect format
146          4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
147         20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
148         48 = /dev/fd?h410 5.25" 410K in a 1200K drive
149         64 = /dev/fd?h420 5.25" 420K in a 1200K drive
150         24 = /dev/fd?h720 5.25" 720K in a 1200K drive
151         80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
152          8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
153         40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
154         56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
155         72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
156         92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
157
158         12 = /dev/fd?u360 3.5" 360K Double Density(2)
159         16 = /dev/fd?u720 3.5" 720K Double Density(1)
160        120 = /dev/fd?u800 3.5" 800K Double Density(2)
161         52 = /dev/fd?u820 3.5" 820K Double Density
162         68 = /dev/fd?u830 3.5" 830K Double Density
163         84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
164         88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
165         28 = /dev/fd?u1440 3.5" 1440K High Density(1)
166        124 = /dev/fd?u1600 3.5" 1600K High Density(1)
167         44 = /dev/fd?u1680 3.5" 1680K High Density(3)
168         60 = /dev/fd?u1722 3.5" 1722K High Density
169         76 = /dev/fd?u1743 3.5" 1743K High Density
170         96 = /dev/fd?u1760 3.5" 1760K High Density
171        116 = /dev/fd?u1840 3.5" 1840K High Density(3)
172        100 = /dev/fd?u1920 3.5" 1920K High Density(1)
173         32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
174        104 = /dev/fd?u3200 3.5" 3200K Extra Density
175        108 = /dev/fd?u3520 3.5" 3520K Extra Density
176        112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
177
178         36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
179
180        (1) Autodetectable format
181        (2) Autodetectable format in a Double Density (720K) drive only
182        (3) Autodetectable format in a High Density (1440K) drive only
183
184        NOTE: The letter in the device name (d, q, h or u)
185        signifies the type of drive: 5.25" Double Density (d),
186        5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
187        (any model, u). The use of the capital letters D, H
188        and E for the 3.5" models have been deprecated, since
189        the drive type is insignificant for these devices.
190
191  3 char Pseudo-TTY slaves
192          0 = /dev/ttyp0 First PTY slave
193          1 = /dev/ttyp1 Second PTY slave
194            ...
195        255 = /dev/ttyef 256th PTY slave
196
197        These are the old-style (BSD) PTY devices; Unix98
198        devices are on major 136 and above.
199
200  3 block First MFM, RLL and IDE hard disk/CD-ROM interface
201          0 = /dev/hda Master: whole disk (or CD-ROM)
202         64 = /dev/hdb Slave: whole disk (or CD-ROM)
203
204        For partitions, add to the whole disk device number:
205          0 = /dev/hd? Whole disk
206          1 = /dev/hd?1 First partition
207          2 = /dev/hd?2 Second partition
208            ...
209         63 = /dev/hd?63 63rd partition
210
211        For Linux/i386, partitions 1-4 are the primary
212        partitions, and 5 and above are logical partitions.
213        Other versions of Linux use partitioning schemes
214        appropriate to their respective architectures.
215
216  4 char TTY devices
217          0 = /dev/tty0 Current virtual console
218
219          1 = /dev/tty1 First virtual console
220            ...
221         63 = /dev/tty63 63rd virtual console
222         64 = /dev/ttyS0 First UART serial port
223            ...
224        255 = /dev/ttyS191 192nd UART serial port
225
226        UART serial ports refer to 8250/16450/16550 series devices.
227
228        Older versions of the Linux kernel used this major
229        number for BSD PTY devices. As of Linux 2.1.115, this
230        is no longer supported. Use major numbers 2 and 3.
231
232  4 block Aliases for dynamically allocated major devices to be used
233        when its not possible to create the real device nodes
234        because the root filesystem is mounted read-only.
235
236                  0 = /dev/root
237
238  5 char Alternate TTY devices
239          0 = /dev/tty Current TTY device
240          1 = /dev/console System console
241          2 = /dev/ptmx PTY master multiplex
242          3 = /dev/ttyprintk User messages via printk TTY device
243         64 = /dev/cua0 Callout device for ttyS0
244            ...
245        255 = /dev/cua191 Callout device for ttyS191
246
247        (5,1) is /dev/console starting with Linux 2.1.71. See
248        the section on terminal devices for more information
249        on /dev/console.
250
251  6 char Parallel printer devices
252          0 = /dev/lp0 Parallel printer on parport0
253          1 = /dev/lp1 Parallel printer on parport1
254            ...
255
256        Current Linux kernels no longer have a fixed mapping
257        between parallel ports and I/O addresses. Instead,
258        they are redirected through the parport multiplex layer.
259
260  7 char Virtual console capture devices
261          0 = /dev/vcs Current vc text contents
262          1 = /dev/vcs1 tty1 text contents
263            ...
264         63 = /dev/vcs63 tty63 text contents
265        128 = /dev/vcsa Current vc text/attribute contents
266        129 = /dev/vcsa1 tty1 text/attribute contents
267            ...
268        191 = /dev/vcsa63 tty63 text/attribute contents
269
270        NOTE: These devices permit both read and write access.
271
272  7 block Loopback devices
273          0 = /dev/loop0 First loop device
274          1 = /dev/loop1 Second loop device
275            ...
276
277        The loop devices are used to mount filesystems not
278        associated with block devices. The binding to the
279        loop devices is handled by mount(8) or losetup(8).
280
281  8 block SCSI disk devices (0-15)
282          0 = /dev/sda First SCSI disk whole disk
283         16 = /dev/sdb Second SCSI disk whole disk
284         32 = /dev/sdc Third SCSI disk whole disk
285            ...
286        240 = /dev/sdp Sixteenth SCSI disk whole disk
287
288        Partitions are handled in the same way as for IDE
289        disks (see major number 3) except that the limit on
290        partitions is 15.
291
292  9 char SCSI tape devices
293          0 = /dev/st0 First SCSI tape, mode 0
294          1 = /dev/st1 Second SCSI tape, mode 0
295            ...
296         32 = /dev/st0l First SCSI tape, mode 1
297         33 = /dev/st1l Second SCSI tape, mode 1
298            ...
299         64 = /dev/st0m First SCSI tape, mode 2
300         65 = /dev/st1m Second SCSI tape, mode 2
301            ...
302         96 = /dev/st0a First SCSI tape, mode 3
303         97 = /dev/st1a Second SCSI tape, mode 3
304              ...
305        128 = /dev/nst0 First SCSI tape, mode 0, no rewind
306        129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
307            ...
308        160 = /dev/nst0l First SCSI tape, mode 1, no rewind
309        161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
310            ...
311        192 = /dev/nst0m First SCSI tape, mode 2, no rewind
312        193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
313            ...
314        224 = /dev/nst0a First SCSI tape, mode 3, no rewind
315        225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
316            ...
317
318        "No rewind" refers to the omission of the default
319        automatic rewind on device close. The MTREW or MTOFFL
320        ioctl()'s can be used to rewind the tape regardless of
321        the device used to access it.
322
323  9 block Metadisk (RAID) devices
324          0 = /dev/md0 First metadisk group
325          1 = /dev/md1 Second metadisk group
326            ...
327
328        The metadisk driver is used to span a
329        filesystem across multiple physical disks.
330
331 10 char Non-serial mice, misc features
332          0 = /dev/logibm Logitech bus mouse
333          1 = /dev/psaux PS/2-style mouse port
334          2 = /dev/inportbm Microsoft Inport bus mouse
335          3 = /dev/atibm ATI XL bus mouse
336          4 = /dev/jbm J-mouse
337          4 = /dev/amigamouse Amiga mouse (68k/Amiga)
338          5 = /dev/atarimouse Atari mouse
339          6 = /dev/sunmouse Sun mouse
340          7 = /dev/amigamouse1 Second Amiga mouse
341          8 = /dev/smouse Simple serial mouse driver
342          9 = /dev/pc110pad IBM PC-110 digitizer pad
343         10 = /dev/adbmouse Apple Desktop Bus mouse
344         11 = /dev/vrtpanel Vr41xx embedded touch panel
345         13 = /dev/vpcmouse Connectix Virtual PC Mouse
346         14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
347         15 = /dev/touchscreen/mk712 MK712 touchscreen
348        128 = /dev/beep Fancy beep device
349        129 =
350        130 = /dev/watchdog Watchdog timer port
351        131 = /dev/temperature Machine internal temperature
352        132 = /dev/hwtrap Hardware fault trap
353        133 = /dev/exttrp External device trap
354        134 = /dev/apm_bios Advanced Power Management BIOS
355        135 = /dev/rtc Real Time Clock
356        139 = /dev/openprom SPARC OpenBoot PROM
357        140 = /dev/relay8 Berkshire Products Octal relay card
358        141 = /dev/relay16 Berkshire Products ISO-16 relay card
359        142 =
360        143 = /dev/pciconf PCI configuration space
361        144 = /dev/nvram Non-volatile configuration RAM
362        145 = /dev/hfmodem Soundcard shortwave modem control
363        146 = /dev/graphics Linux/SGI graphics device
364        147 = /dev/opengl Linux/SGI OpenGL pipe
365        148 = /dev/gfx Linux/SGI graphics effects device
366        149 = /dev/input/mouse Linux/SGI Irix emulation mouse
367        150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
368        151 = /dev/led Front panel LEDs
369        152 = /dev/kpoll Kernel Poll Driver
370        153 = /dev/mergemem Memory merge device
371        154 = /dev/pmu Macintosh PowerBook power manager
372        155 = /dev/isictl MultiTech ISICom serial control
373        156 = /dev/lcd Front panel LCD display
374        157 = /dev/ac Applicom Intl Profibus card
375        158 = /dev/nwbutton Netwinder external button
376        159 = /dev/nwdebug Netwinder debug interface
377        160 = /dev/nwflash Netwinder flash memory
378        161 = /dev/userdma User-space DMA access
379        162 = /dev/smbus System Management Bus
380        163 = /dev/lik Logitech Internet Keyboard
381        164 = /dev/ipmo Intel Intelligent Platform Management
382        165 = /dev/vmmon VMware virtual machine monitor
383        166 = /dev/i2o/ctl I2O configuration manager
384        167 = /dev/specialix_sxctl Specialix serial control
385        168 = /dev/tcldrv Technology Concepts serial control
386        169 = /dev/specialix_rioctl Specialix RIO serial control
387        170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
388        171 = /dev/srripc QNX4 API IPC manager
389        172 = /dev/usemaclone Semaphore clone device
390        173 = /dev/ipmikcs Intelligent Platform Management
391        174 = /dev/uctrl SPARCbook 3 microcontroller
392        175 = /dev/agpgart AGP Graphics Address Remapping Table
393        176 = /dev/gtrsc Gorgy Timing radio clock
394        177 = /dev/cbm Serial CBM bus
395        178 = /dev/jsflash JavaStation OS flash SIMM
396        179 = /dev/xsvc High-speed shared-mem/semaphore service
397        180 = /dev/vrbuttons Vr41xx button input device
398        181 = /dev/toshiba Toshiba laptop SMM support
399        182 = /dev/perfctr Performance-monitoring counters
400        183 = /dev/hwrng Generic random number generator
401        184 = /dev/cpu/microcode CPU microcode update interface
402        186 = /dev/atomicps Atomic shapshot of process state data
403        187 = /dev/irnet IrNET device
404        188 = /dev/smbusbios SMBus BIOS
405        189 = /dev/ussp_ctl User space serial port control
406        190 = /dev/crash Mission Critical Linux crash dump facility
407        191 = /dev/pcl181 <information missing>
408        192 = /dev/nas_xbus NAS xbus LCD/buttons access
409        193 = /dev/d7s SPARC 7-segment display
410        194 = /dev/zkshim Zero-Knowledge network shim control
411        195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
412        198 = /dev/sexec Signed executable interface
413        199 = /dev/scanners/cuecat :CueCat barcode scanner
414        200 = /dev/net/tun TAP/TUN network device
415        201 = /dev/button/gulpb Transmeta GULP-B buttons
416        202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
417        204 = /dev/video/em8300 EM8300 DVD decoder control
418        205 = /dev/video/em8300_mv EM8300 DVD decoder video
419        206 = /dev/video/em8300_ma EM8300 DVD decoder audio
420        207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
421        208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
422        209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
423        210 = /dev/impi/bt IMPI coprocessor block transfer
424        211 = /dev/impi/smic IMPI coprocessor stream interface
425        212 = /dev/watchdogs/0 First watchdog device
426        213 = /dev/watchdogs/1 Second watchdog device
427        214 = /dev/watchdogs/2 Third watchdog device
428        215 = /dev/watchdogs/3 Fourth watchdog device
429        216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
430        217 = /dev/ni/natmotn National Instruments Motion
431        218 = /dev/kchuid Inter-process chuid control
432        219 = /dev/modems/mwave MWave modem firmware upload
433        220 = /dev/mptctl Message passing technology (MPT) control
434        221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
435        222 = /dev/mvista/hasi Montavista PICMG high availability
436        223 = /dev/input/uinput User level driver support for input
437        224 = /dev/tpm TCPA TPM driver
438        225 = /dev/pps Pulse Per Second driver
439        226 = /dev/systrace Systrace device
440        227 = /dev/mcelog X86_64 Machine Check Exception driver
441        228 = /dev/hpet HPET driver
442        229 = /dev/fuse Fuse (virtual filesystem in user-space)
443        230 = /dev/midishare MidiShare driver
444        231 = /dev/snapshot System memory snapshot device
445        232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
446        233 = /dev/kmview View-OS A process with a view
447        234 = /dev/btrfs-control Btrfs control device
448        235 = /dev/autofs Autofs control device
449        236 = /dev/mapper/control Device-Mapper control device
450        237 = /dev/loop-control Loopback control device
451        238 = /dev/vhost-net Host kernel accelerator for virtio net
452
453        240-254 Reserved for local use
454        255 Reserved for MISC_DYNAMIC_MINOR
455
456 11 char Raw keyboard device (Linux/SPARC only)
457          0 = /dev/kbd Raw keyboard device
458
459 11 char Serial Mux device (Linux/PA-RISC only)
460          0 = /dev/ttyB0 First mux port
461          1 = /dev/ttyB1 Second mux port
462            ...
463
464 11 block SCSI CD-ROM devices
465          0 = /dev/scd0 First SCSI CD-ROM
466          1 = /dev/scd1 Second SCSI CD-ROM
467            ...
468
469        The prefix /dev/sr (instead of /dev/scd) has been deprecated.
470
471 12 char QIC-02 tape
472          2 = /dev/ntpqic11 QIC-11, no rewind-on-close
473          3 = /dev/tpqic11 QIC-11, rewind-on-close
474          4 = /dev/ntpqic24 QIC-24, no rewind-on-close
475          5 = /dev/tpqic24 QIC-24, rewind-on-close
476          6 = /dev/ntpqic120 QIC-120, no rewind-on-close
477          7 = /dev/tpqic120 QIC-120, rewind-on-close
478          8 = /dev/ntpqic150 QIC-150, no rewind-on-close
479          9 = /dev/tpqic150 QIC-150, rewind-on-close
480
481        The device names specified are proposed -- if there
482        are "standard" names for these devices, please let me know.
483
484 12 block
485
486 13 char Input core
487          0 = /dev/input/js0 First joystick
488          1 = /dev/input/js1 Second joystick
489            ...
490         32 = /dev/input/mouse0 First mouse
491         33 = /dev/input/mouse1 Second mouse
492            ...
493         63 = /dev/input/mice Unified mouse
494         64 = /dev/input/event0 First event queue
495         65 = /dev/input/event1 Second event queue
496            ...
497
498        Each device type has 5 bits (32 minors).
499
500 13 block 8-bit MFM/RLL/IDE controller
501          0 = /dev/xda First XT disk whole disk
502         64 = /dev/xdb Second XT disk whole disk
503
504        Partitions are handled in the same way as IDE disks
505        (see major number 3).
506
507 14 char Open Sound System (OSS)
508          0 = /dev/mixer Mixer control
509          1 = /dev/sequencer Audio sequencer
510          2 = /dev/midi00 First MIDI port
511          3 = /dev/dsp Digital audio
512          4 = /dev/audio Sun-compatible digital audio
513          6 =
514          7 = /dev/audioctl SPARC audio control device
515          8 = /dev/sequencer2 Sequencer -- alternate device
516         16 = /dev/mixer1 Second soundcard mixer control
517         17 = /dev/patmgr0 Sequencer patch manager
518         18 = /dev/midi01 Second MIDI port
519         19 = /dev/dsp1 Second soundcard digital audio
520         20 = /dev/audio1 Second soundcard Sun digital audio
521         33 = /dev/patmgr1 Sequencer patch manager
522         34 = /dev/midi02 Third MIDI port
523         50 = /dev/midi03 Fourth MIDI port
524
525 14 block
526
527 15 char Joystick
528          0 = /dev/js0 First analog joystick
529          1 = /dev/js1 Second analog joystick
530            ...
531        128 = /dev/djs0 First digital joystick
532        129 = /dev/djs1 Second digital joystick
533            ...
534 15 block Sony CDU-31A/CDU-33A CD-ROM
535          0 = /dev/sonycd Sony CDU-31a CD-ROM
536
537 16 char Non-SCSI scanners
538          0 = /dev/gs4500 Genius 4500 handheld scanner
539
540 16 block GoldStar CD-ROM
541          0 = /dev/gscd GoldStar CD-ROM
542
543 17 char OBSOLETE (was Chase serial card)
544          0 = /dev/ttyH0 First Chase port
545          1 = /dev/ttyH1 Second Chase port
546            ...
547 17 block Optics Storage CD-ROM
548          0 = /dev/optcd Optics Storage CD-ROM
549
550 18 char OBSOLETE (was Chase serial card - alternate devices)
551          0 = /dev/cuh0 Callout device for ttyH0
552          1 = /dev/cuh1 Callout device for ttyH1
553            ...
554 18 block Sanyo CD-ROM
555          0 = /dev/sjcd Sanyo CD-ROM
556
557 19 char Cyclades serial card
558          0 = /dev/ttyC0 First Cyclades port
559            ...
560         31 = /dev/ttyC31 32nd Cyclades port
561
562 19 block "Double" compressed disk
563          0 = /dev/double0 First compressed disk
564            ...
565          7 = /dev/double7 Eighth compressed disk
566        128 = /dev/cdouble0 Mirror of first compressed disk
567            ...
568        135 = /dev/cdouble7 Mirror of eighth compressed disk
569
570        See the Double documentation for the meaning of the
571        mirror devices.
572
573 20 char Cyclades serial card - alternate devices
574          0 = /dev/cub0 Callout device for ttyC0
575            ...
576         31 = /dev/cub31 Callout device for ttyC31
577
578 20 block Hitachi CD-ROM (under development)
579          0 = /dev/hitcd Hitachi CD-ROM
580
581 21 char Generic SCSI access
582          0 = /dev/sg0 First generic SCSI device
583          1 = /dev/sg1 Second generic SCSI device
584            ...
585
586        Most distributions name these /dev/sga, /dev/sgb...;
587        this sets an unnecessary limit of 26 SCSI devices in
588        the system and is counter to standard Linux
589        device-naming practice.
590
591 21 block Acorn MFM hard drive interface
592          0 = /dev/mfma First MFM drive whole disk
593         64 = /dev/mfmb Second MFM drive whole disk
594
595        This device is used on the ARM-based Acorn RiscPC.
596        Partitions are handled the same way as for IDE disks
597        (see major number 3).
598
599 22 char Digiboard serial card
600          0 = /dev/ttyD0 First Digiboard port
601          1 = /dev/ttyD1 Second Digiboard port
602            ...
603 22 block Second IDE hard disk/CD-ROM interface
604          0 = /dev/hdc Master: whole disk (or CD-ROM)
605         64 = /dev/hdd Slave: whole disk (or CD-ROM)
606
607        Partitions are handled the same way as for the first
608        interface (see major number 3).
609
610 23 char Digiboard serial card - alternate devices
611          0 = /dev/cud0 Callout device for ttyD0
612          1 = /dev/cud1 Callout device for ttyD1
613              ...
614 23 block Mitsumi proprietary CD-ROM
615          0 = /dev/mcd Mitsumi CD-ROM
616
617 24 char Stallion serial card
618          0 = /dev/ttyE0 Stallion port 0 card 0
619          1 = /dev/ttyE1 Stallion port 1 card 0
620            ...
621         64 = /dev/ttyE64 Stallion port 0 card 1
622         65 = /dev/ttyE65 Stallion port 1 card 1
623              ...
624        128 = /dev/ttyE128 Stallion port 0 card 2
625        129 = /dev/ttyE129 Stallion port 1 card 2
626            ...
627        192 = /dev/ttyE192 Stallion port 0 card 3
628        193 = /dev/ttyE193 Stallion port 1 card 3
629            ...
630 24 block Sony CDU-535 CD-ROM
631          0 = /dev/cdu535 Sony CDU-535 CD-ROM
632
633 25 char Stallion serial card - alternate devices
634          0 = /dev/cue0 Callout device for ttyE0
635          1 = /dev/cue1 Callout device for ttyE1
636            ...
637         64 = /dev/cue64 Callout device for ttyE64
638         65 = /dev/cue65 Callout device for ttyE65
639            ...
640        128 = /dev/cue128 Callout device for ttyE128
641        129 = /dev/cue129 Callout device for ttyE129
642            ...
643        192 = /dev/cue192 Callout device for ttyE192
644        193 = /dev/cue193 Callout device for ttyE193
645              ...
646 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
647          0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
648          1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
649          2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
650          3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
651
652 26 char
653
654 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
655          0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
656          1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
657          2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
658          3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
659
660 27 char QIC-117 tape
661          0 = /dev/qft0 Unit 0, rewind-on-close
662          1 = /dev/qft1 Unit 1, rewind-on-close
663          2 = /dev/qft2 Unit 2, rewind-on-close
664          3 = /dev/qft3 Unit 3, rewind-on-close
665          4 = /dev/nqft0 Unit 0, no rewind-on-close
666          5 = /dev/nqft1 Unit 1, no rewind-on-close
667          6 = /dev/nqft2 Unit 2, no rewind-on-close
668          7 = /dev/nqft3 Unit 3, no rewind-on-close
669         16 = /dev/zqft0 Unit 0, rewind-on-close, compression
670         17 = /dev/zqft1 Unit 1, rewind-on-close, compression
671         18 = /dev/zqft2 Unit 2, rewind-on-close, compression
672         19 = /dev/zqft3 Unit 3, rewind-on-close, compression
673         20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
674         21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
675         22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
676         23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
677         32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
678         33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
679         34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
680         35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
681         36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
682         37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
683         38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
684         39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
685
686 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
687          0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
688          1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
689          2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
690          3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
691
692 28 char Stallion serial card - card programming
693          0 = /dev/staliomem0 First Stallion card I/O memory
694          1 = /dev/staliomem1 Second Stallion card I/O memory
695          2 = /dev/staliomem2 Third Stallion card I/O memory
696          3 = /dev/staliomem3 Fourth Stallion card I/O memory
697
698 28 char Atari SLM ACSI laser printer (68k/Atari)
699          0 = /dev/slm0 First SLM laser printer
700          1 = /dev/slm1 Second SLM laser printer
701            ...
702 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
703          0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
704          1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
705          2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
706          3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
707
708 28 block ACSI disk (68k/Atari)
709          0 = /dev/ada First ACSI disk whole disk
710         16 = /dev/adb Second ACSI disk whole disk
711         32 = /dev/adc Third ACSI disk whole disk
712            ...
713        240 = /dev/adp 16th ACSI disk whole disk
714
715        Partitions are handled in the same way as for IDE
716        disks (see major number 3) except that the limit on
717        partitions is 15, like SCSI.
718
719 29 char Universal frame buffer
720          0 = /dev/fb0 First frame buffer
721          1 = /dev/fb1 Second frame buffer
722            ...
723         31 = /dev/fb31 32nd frame buffer
724
725 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
726          0 = /dev/aztcd Aztech CD-ROM
727
728 30 char iBCS-2 compatibility devices
729          0 = /dev/socksys Socket access
730          1 = /dev/spx SVR3 local X interface
731         32 = /dev/inet/ip Network access
732         33 = /dev/inet/icmp
733         34 = /dev/inet/ggp
734         35 = /dev/inet/ipip
735         36 = /dev/inet/tcp
736         37 = /dev/inet/egp
737         38 = /dev/inet/pup
738         39 = /dev/inet/udp
739         40 = /dev/inet/idp
740         41 = /dev/inet/rawip
741
742        Additionally, iBCS-2 requires the following links:
743
744        /dev/ip -> /dev/inet/ip
745        /dev/icmp -> /dev/inet/icmp
746        /dev/ggp -> /dev/inet/ggp
747        /dev/ipip -> /dev/inet/ipip
748        /dev/tcp -> /dev/inet/tcp
749        /dev/egp -> /dev/inet/egp
750        /dev/pup -> /dev/inet/pup
751        /dev/udp -> /dev/inet/udp
752        /dev/idp -> /dev/inet/idp
753        /dev/rawip -> /dev/inet/rawip
754        /dev/inet/arp -> /dev/inet/udp
755        /dev/inet/rip -> /dev/inet/udp
756        /dev/nfsd -> /dev/socksys
757        /dev/X0R -> /dev/null (? apparently not required ?)
758
759 30 block Philips LMS CM-205 CD-ROM
760          0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
761
762        /dev/lmscd is an older name for this device. This
763        driver does not work with the CM-205MS CD-ROM.
764
765 31 char MPU-401 MIDI
766          0 = /dev/mpu401data MPU-401 data port
767          1 = /dev/mpu401stat MPU-401 status port
768
769 31 block ROM/flash memory card
770          0 = /dev/rom0 First ROM card (rw)
771              ...
772          7 = /dev/rom7 Eighth ROM card (rw)
773          8 = /dev/rrom0 First ROM card (ro)
774            ...
775         15 = /dev/rrom7 Eighth ROM card (ro)
776         16 = /dev/flash0 First flash memory card (rw)
777            ...
778         23 = /dev/flash7 Eighth flash memory card (rw)
779         24 = /dev/rflash0 First flash memory card (ro)
780            ...
781         31 = /dev/rflash7 Eighth flash memory card (ro)
782
783        The read-write (rw) devices support back-caching
784        written data in RAM, as well as writing to flash RAM
785        devices. The read-only devices (ro) support reading
786        only.
787
788 32 char Specialix serial card
789          0 = /dev/ttyX0 First Specialix port
790          1 = /dev/ttyX1 Second Specialix port
791            ...
792 32 block Philips LMS CM-206 CD-ROM
793          0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
794
795 33 char Specialix serial card - alternate devices
796          0 = /dev/cux0 Callout device for ttyX0
797          1 = /dev/cux1 Callout device for ttyX1
798            ...
799 33 block Third IDE hard disk/CD-ROM interface
800          0 = /dev/hde Master: whole disk (or CD-ROM)
801         64 = /dev/hdf Slave: whole disk (or CD-ROM)
802
803        Partitions are handled the same way as for the first
804        interface (see major number 3).
805
806 34 char Z8530 HDLC driver
807          0 = /dev/scc0 First Z8530, first port
808          1 = /dev/scc1 First Z8530, second port
809          2 = /dev/scc2 Second Z8530, first port
810          3 = /dev/scc3 Second Z8530, second port
811            ...
812
813        In a previous version these devices were named
814        /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
815        on.
816
817 34 block Fourth IDE hard disk/CD-ROM interface
818          0 = /dev/hdg Master: whole disk (or CD-ROM)
819         64 = /dev/hdh Slave: whole disk (or CD-ROM)
820
821        Partitions are handled the same way as for the first
822        interface (see major number 3).
823
824 35 char tclmidi MIDI driver
825          0 = /dev/midi0 First MIDI port, kernel timed
826          1 = /dev/midi1 Second MIDI port, kernel timed
827          2 = /dev/midi2 Third MIDI port, kernel timed
828          3 = /dev/midi3 Fourth MIDI port, kernel timed
829         64 = /dev/rmidi0 First MIDI port, untimed
830         65 = /dev/rmidi1 Second MIDI port, untimed
831         66 = /dev/rmidi2 Third MIDI port, untimed
832         67 = /dev/rmidi3 Fourth MIDI port, untimed
833        128 = /dev/smpte0 First MIDI port, SMPTE timed
834        129 = /dev/smpte1 Second MIDI port, SMPTE timed
835        130 = /dev/smpte2 Third MIDI port, SMPTE timed
836        131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
837
838 35 block Slow memory ramdisk
839          0 = /dev/slram Slow memory ramdisk
840
841 36 char Netlink support
842          0 = /dev/route Routing, device updates, kernel to user
843          1 = /dev/skip enSKIP security cache control
844          3 = /dev/fwmonitor Firewall packet copies
845         16 = /dev/tap0 First Ethertap device
846            ...
847         31 = /dev/tap15 16th Ethertap device
848
849 36 block MCA ESDI hard disk
850          0 = /dev/eda First ESDI disk whole disk
851         64 = /dev/edb Second ESDI disk whole disk
852            ...
853
854        Partitions are handled in the same way as IDE disks
855        (see major number 3).
856
857 37 char IDE tape
858          0 = /dev/ht0 First IDE tape
859          1 = /dev/ht1 Second IDE tape
860            ...
861        128 = /dev/nht0 First IDE tape, no rewind-on-close
862        129 = /dev/nht1 Second IDE tape, no rewind-on-close
863            ...
864
865        Currently, only one IDE tape drive is supported.
866
867 37 block Zorro II ramdisk
868          0 = /dev/z2ram Zorro II ramdisk
869
870 38 char Myricom PCI Myrinet board
871          0 = /dev/mlanai0 First Myrinet board
872          1 = /dev/mlanai1 Second Myrinet board
873            ...
874
875        This device is used for status query, board control
876        and "user level packet I/O." This board is also
877        accessible as a standard networking "eth" device.
878
879 38 block OBSOLETE (was Linux/AP+)
880
881 39 char ML-16P experimental I/O board
882          0 = /dev/ml16pa-a0 First card, first analog channel
883          1 = /dev/ml16pa-a1 First card, second analog channel
884            ...
885         15 = /dev/ml16pa-a15 First card, 16th analog channel
886         16 = /dev/ml16pa-d First card, digital lines
887         17 = /dev/ml16pa-c0 First card, first counter/timer
888         18 = /dev/ml16pa-c1 First card, second counter/timer
889         19 = /dev/ml16pa-c2 First card, third counter/timer
890         32 = /dev/ml16pb-a0 Second card, first analog channel
891         33 = /dev/ml16pb-a1 Second card, second analog channel
892            ...
893         47 = /dev/ml16pb-a15 Second card, 16th analog channel
894         48 = /dev/ml16pb-d Second card, digital lines
895         49 = /dev/ml16pb-c0 Second card, first counter/timer
896         50 = /dev/ml16pb-c1 Second card, second counter/timer
897         51 = /dev/ml16pb-c2 Second card, third counter/timer
898              ...
899 39 block
900
901 40 char
902
903 40 block
904
905 41 char Yet Another Micro Monitor
906          0 = /dev/yamm Yet Another Micro Monitor
907
908 41 block
909
910 42 char Demo/sample use
911
912 42 block Demo/sample use
913
914        This number is intended for use in sample code, as
915        well as a general "example" device number. It
916        should never be used for a device driver that is being
917        distributed; either obtain an official number or use
918        the local/experimental range. The sudden addition or
919        removal of a driver with this number should not cause
920        ill effects to the system (bugs excepted.)
921
922        IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
923        DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
924
925 43 char isdn4linux virtual modem
926          0 = /dev/ttyI0 First virtual modem
927            ...
928         63 = /dev/ttyI63 64th virtual modem
929
930 43 block Network block devices
931          0 = /dev/nb0 First network block device
932          1 = /dev/nb1 Second network block device
933            ...
934
935        Network Block Device is somehow similar to loopback
936        devices: If you read from it, it sends packet across
937        network asking server for data. If you write to it, it
938        sends packet telling server to write. It could be used
939        to mounting filesystems over the net, swapping over
940        the net, implementing block device in userland etc.
941
942 44 char isdn4linux virtual modem - alternate devices
943          0 = /dev/cui0 Callout device for ttyI0
944            ...
945         63 = /dev/cui63 Callout device for ttyI63
946
947 44 block Flash Translation Layer (FTL) filesystems
948          0 = /dev/ftla FTL on first Memory Technology Device
949         16 = /dev/ftlb FTL on second Memory Technology Device
950         32 = /dev/ftlc FTL on third Memory Technology Device
951            ...
952        240 = /dev/ftlp FTL on 16th Memory Technology Device
953
954        Partitions are handled in the same way as for IDE
955        disks (see major number 3) except that the partition
956        limit is 15 rather than 63 per disk (same as SCSI.)
957
958 45 char isdn4linux ISDN BRI driver
959          0 = /dev/isdn0 First virtual B channel raw data
960            ...
961         63 = /dev/isdn63 64th virtual B channel raw data
962         64 = /dev/isdnctrl0 First channel control/debug
963            ...
964        127 = /dev/isdnctrl63 64th channel control/debug
965
966        128 = /dev/ippp0 First SyncPPP device
967            ...
968        191 = /dev/ippp63 64th SyncPPP device
969
970        255 = /dev/isdninfo ISDN monitor interface
971
972 45 block Parallel port IDE disk devices
973          0 = /dev/pda First parallel port IDE disk
974         16 = /dev/pdb Second parallel port IDE disk
975         32 = /dev/pdc Third parallel port IDE disk
976         48 = /dev/pdd Fourth parallel port IDE disk
977
978        Partitions are handled in the same way as for IDE
979        disks (see major number 3) except that the partition
980        limit is 15 rather than 63 per disk.
981
982 46 char Comtrol Rocketport serial card
983          0 = /dev/ttyR0 First Rocketport port
984          1 = /dev/ttyR1 Second Rocketport port
985            ...
986 46 block Parallel port ATAPI CD-ROM devices
987          0 = /dev/pcd0 First parallel port ATAPI CD-ROM
988          1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
989          2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
990          3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
991
992 47 char Comtrol Rocketport serial card - alternate devices
993          0 = /dev/cur0 Callout device for ttyR0
994          1 = /dev/cur1 Callout device for ttyR1
995            ...
996 47 block Parallel port ATAPI disk devices
997          0 = /dev/pf0 First parallel port ATAPI disk
998          1 = /dev/pf1 Second parallel port ATAPI disk
999          2 = /dev/pf2 Third parallel port ATAPI disk
1000          3 = /dev/pf3 Fourth parallel port ATAPI disk
1001
1002        This driver is intended for floppy disks and similar
1003        devices and hence does not support partitioning.
1004
1005 48 char SDL RISCom serial card
1006          0 = /dev/ttyL0 First RISCom port
1007          1 = /dev/ttyL1 Second RISCom port
1008            ...
1009 48 block Mylex DAC960 PCI RAID controller; first controller
1010          0 = /dev/rd/c0d0 First disk, whole disk
1011          8 = /dev/rd/c0d1 Second disk, whole disk
1012            ...
1013        248 = /dev/rd/c0d31 32nd disk, whole disk
1014
1015        For partitions add:
1016          0 = /dev/rd/c?d? Whole disk
1017          1 = /dev/rd/c?d?p1 First partition
1018            ...
1019          7 = /dev/rd/c?d?p7 Seventh partition
1020
1021 49 char SDL RISCom serial card - alternate devices
1022          0 = /dev/cul0 Callout device for ttyL0
1023          1 = /dev/cul1 Callout device for ttyL1
1024            ...
1025 49 block Mylex DAC960 PCI RAID controller; second controller
1026          0 = /dev/rd/c1d0 First disk, whole disk
1027          8 = /dev/rd/c1d1 Second disk, whole disk
1028            ...
1029        248 = /dev/rd/c1d31 32nd disk, whole disk
1030
1031        Partitions are handled as for major 48.
1032
1033 50 char Reserved for GLINT
1034
1035 50 block Mylex DAC960 PCI RAID controller; third controller
1036          0 = /dev/rd/c2d0 First disk, whole disk
1037          8 = /dev/rd/c2d1 Second disk, whole disk
1038            ...
1039        248 = /dev/rd/c2d31 32nd disk, whole disk
1040
1041 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1042          0 = /dev/bc0 First Baycom radio modem
1043          1 = /dev/bc1 Second Baycom radio modem
1044            ...
1045 51 block Mylex DAC960 PCI RAID controller; fourth controller
1046          0 = /dev/rd/c3d0 First disk, whole disk
1047          8 = /dev/rd/c3d1 Second disk, whole disk
1048            ...
1049        248 = /dev/rd/c3d31 32nd disk, whole disk
1050
1051        Partitions are handled as for major 48.
1052
1053 52 char Spellcaster DataComm/BRI ISDN card
1054          0 = /dev/dcbri0 First DataComm card
1055          1 = /dev/dcbri1 Second DataComm card
1056          2 = /dev/dcbri2 Third DataComm card
1057          3 = /dev/dcbri3 Fourth DataComm card
1058
1059 52 block Mylex DAC960 PCI RAID controller; fifth controller
1060          0 = /dev/rd/c4d0 First disk, whole disk
1061          8 = /dev/rd/c4d1 Second disk, whole disk
1062            ...
1063        248 = /dev/rd/c4d31 32nd disk, whole disk
1064
1065        Partitions are handled as for major 48.
1066
1067 53 char BDM interface for remote debugging MC683xx microcontrollers
1068          0 = /dev/pd_bdm0 PD BDM interface on lp0
1069          1 = /dev/pd_bdm1 PD BDM interface on lp1
1070          2 = /dev/pd_bdm2 PD BDM interface on lp2
1071          4 = /dev/icd_bdm0 ICD BDM interface on lp0
1072          5 = /dev/icd_bdm1 ICD BDM interface on lp1
1073          6 = /dev/icd_bdm2 ICD BDM interface on lp2
1074
1075        This device is used for the interfacing to the MC683xx
1076        microcontrollers via Background Debug Mode by use of a
1077        Parallel Port interface. PD is the Motorola Public
1078        Domain Interface and ICD is the commercial interface
1079        by P&E.
1080
1081 53 block Mylex DAC960 PCI RAID controller; sixth controller
1082          0 = /dev/rd/c5d0 First disk, whole disk
1083          8 = /dev/rd/c5d1 Second disk, whole disk
1084            ...
1085        248 = /dev/rd/c5d31 32nd disk, whole disk
1086
1087        Partitions are handled as for major 48.
1088
1089 54 char Electrocardiognosis Holter serial card
1090          0 = /dev/holter0 First Holter port
1091          1 = /dev/holter1 Second Holter port
1092          2 = /dev/holter2 Third Holter port
1093
1094        A custom serial card used by Electrocardiognosis SRL
1095        <mseritan@ottonel.pub.ro> to transfer data from Holter
1096        24-hour heart monitoring equipment.
1097
1098 54 block Mylex DAC960 PCI RAID controller; seventh controller
1099          0 = /dev/rd/c6d0 First disk, whole disk
1100          8 = /dev/rd/c6d1 Second disk, whole disk
1101            ...
1102        248 = /dev/rd/c6d31 32nd disk, whole disk
1103
1104        Partitions are handled as for major 48.
1105
1106 55 char DSP56001 digital signal processor
1107          0 = /dev/dsp56k First DSP56001
1108
1109 55 block Mylex DAC960 PCI RAID controller; eighth controller
1110          0 = /dev/rd/c7d0 First disk, whole disk
1111          8 = /dev/rd/c7d1 Second disk, whole disk
1112            ...
1113        248 = /dev/rd/c7d31 32nd disk, whole disk
1114
1115        Partitions are handled as for major 48.
1116
1117 56 char Apple Desktop Bus
1118          0 = /dev/adb ADB bus control
1119
1120        Additional devices will be added to this number, all
1121        starting with /dev/adb.
1122
1123 56 block Fifth IDE hard disk/CD-ROM interface
1124          0 = /dev/hdi Master: whole disk (or CD-ROM)
1125         64 = /dev/hdj Slave: whole disk (or CD-ROM)
1126
1127        Partitions are handled the same way as for the first
1128        interface (see major number 3).
1129
1130 57 char Hayes ESP serial card
1131          0 = /dev/ttyP0 First ESP port
1132          1 = /dev/ttyP1 Second ESP port
1133            ...
1134
1135 57 block Sixth IDE hard disk/CD-ROM interface
1136          0 = /dev/hdk Master: whole disk (or CD-ROM)
1137         64 = /dev/hdl Slave: whole disk (or CD-ROM)
1138
1139        Partitions are handled the same way as for the first
1140        interface (see major number 3).
1141
1142 58 char Hayes ESP serial card - alternate devices
1143          0 = /dev/cup0 Callout device for ttyP0
1144          1 = /dev/cup1 Callout device for ttyP1
1145            ...
1146
1147 58 block Reserved for logical volume manager
1148
1149 59 char sf firewall package
1150          0 = /dev/firewall Communication with sf kernel module
1151
1152 59 block Generic PDA filesystem device
1153          0 = /dev/pda0 First PDA device
1154          1 = /dev/pda1 Second PDA device
1155            ...
1156
1157        The pda devices are used to mount filesystems on
1158        remote pda's (basically slow handheld machines with
1159        proprietary OS's and limited memory and storage
1160        running small fs translation drivers) through serial /
1161        IRDA / parallel links.
1162
1163        NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1164
1165 60-63 char LOCAL/EXPERIMENTAL USE
1166
1167 60-63 block LOCAL/EXPERIMENTAL USE
1168        Allocated for local/experimental use. For devices not
1169        assigned official numbers, these ranges should be
1170        used in order to avoid conflicting with future assignments.
1171
1172 64 char ENskip kernel encryption package
1173          0 = /dev/enskip Communication with ENskip kernel module
1174
1175 64 block Scramdisk/DriveCrypt encrypted devices
1176          0 = /dev/scramdisk/master Master node for ioctls
1177          1 = /dev/scramdisk/1 First encrypted device
1178          2 = /dev/scramdisk/2 Second encrypted device
1179          ...
1180        255 = /dev/scramdisk/255 255th encrypted device
1181
1182        The filename of the encrypted container and the passwords
1183        are sent via ioctls (using the sdmount tool) to the master
1184        node which then activates them via one of the
1185        /dev/scramdisk/x nodes for loop mounting (all handled
1186        through the sdmount tool).
1187
1188        Requested by: andy@scramdisklinux.org
1189
1190 65 char Sundance "plink" Transputer boards (obsolete, unused)
1191          0 = /dev/plink0 First plink device
1192          1 = /dev/plink1 Second plink device
1193          2 = /dev/plink2 Third plink device
1194          3 = /dev/plink3 Fourth plink device
1195         64 = /dev/rplink0 First plink device, raw
1196         65 = /dev/rplink1 Second plink device, raw
1197         66 = /dev/rplink2 Third plink device, raw
1198         67 = /dev/rplink3 Fourth plink device, raw
1199        128 = /dev/plink0d First plink device, debug
1200        129 = /dev/plink1d Second plink device, debug
1201        130 = /dev/plink2d Third plink device, debug
1202        131 = /dev/plink3d Fourth plink device, debug
1203        192 = /dev/rplink0d First plink device, raw, debug
1204        193 = /dev/rplink1d Second plink device, raw, debug
1205        194 = /dev/rplink2d Third plink device, raw, debug
1206        195 = /dev/rplink3d Fourth plink device, raw, debug
1207
1208        This is a commercial driver; contact James Howes
1209        <jth@prosig.demon.co.uk> for information.
1210
1211 65 block SCSI disk devices (16-31)
1212          0 = /dev/sdq 17th SCSI disk whole disk
1213         16 = /dev/sdr 18th SCSI disk whole disk
1214         32 = /dev/sds 19th SCSI disk whole disk
1215            ...
1216        240 = /dev/sdaf 32nd SCSI disk whole disk
1217
1218        Partitions are handled in the same way as for IDE
1219        disks (see major number 3) except that the limit on
1220        partitions is 15.
1221
1222 66 char YARC PowerPC PCI coprocessor card
1223          0 = /dev/yppcpci0 First YARC card
1224          1 = /dev/yppcpci1 Second YARC card
1225            ...
1226
1227 66 block SCSI disk devices (32-47)
1228          0 = /dev/sdag 33th SCSI disk whole disk
1229         16 = /dev/sdah 34th SCSI disk whole disk
1230         32 = /dev/sdai 35th SCSI disk whole disk
1231            ...
1232        240 = /dev/sdav 48nd SCSI disk whole disk
1233
1234        Partitions are handled in the same way as for IDE
1235        disks (see major number 3) except that the limit on
1236        partitions is 15.
1237
1238 67 char Coda network file system
1239          0 = /dev/cfs0 Coda cache manager
1240
1241        See http://www.coda.cs.cmu.edu for information about Coda.
1242
1243 67 block SCSI disk devices (48-63)
1244          0 = /dev/sdaw 49th SCSI disk whole disk
1245         16 = /dev/sdax 50th SCSI disk whole disk
1246         32 = /dev/sday 51st SCSI disk whole disk
1247            ...
1248        240 = /dev/sdbl 64th SCSI disk whole disk
1249
1250        Partitions are handled in the same way as for IDE
1251        disks (see major number 3) except that the limit on
1252        partitions is 15.
1253
1254 68 char CAPI 2.0 interface
1255          0 = /dev/capi20 Control device
1256          1 = /dev/capi20.00 First CAPI 2.0 application
1257          2 = /dev/capi20.01 Second CAPI 2.0 application
1258            ...
1259         20 = /dev/capi20.19 19th CAPI 2.0 application
1260
1261        ISDN CAPI 2.0 driver for use with CAPI 2.0
1262        applications; currently supports the AVM B1 card.
1263
1264 68 block SCSI disk devices (64-79)
1265          0 = /dev/sdbm 65th SCSI disk whole disk
1266         16 = /dev/sdbn 66th SCSI disk whole disk
1267         32 = /dev/sdbo 67th SCSI disk whole disk
1268            ...
1269        240 = /dev/sdcb 80th SCSI disk whole disk
1270
1271        Partitions are handled in the same way as for IDE
1272        disks (see major number 3) except that the limit on
1273        partitions is 15.
1274
1275 69 char MA16 numeric accelerator card
1276          0 = /dev/ma16 Board memory access
1277
1278 69 block SCSI disk devices (80-95)
1279          0 = /dev/sdcc 81st SCSI disk whole disk
1280         16 = /dev/sdcd 82nd SCSI disk whole disk
1281         32 = /dev/sdce 83th SCSI disk whole disk
1282            ...
1283        240 = /dev/sdcr 96th SCSI disk whole disk
1284
1285        Partitions are handled in the same way as for IDE
1286        disks (see major number 3) except that the limit on
1287        partitions is 15.
1288
1289 70 char SpellCaster Protocol Services Interface
1290          0 = /dev/apscfg Configuration interface
1291          1 = /dev/apsauth Authentication interface
1292          2 = /dev/apslog Logging interface
1293          3 = /dev/apsdbg Debugging interface
1294         64 = /dev/apsisdn ISDN command interface
1295         65 = /dev/apsasync Async command interface
1296        128 = /dev/apsmon Monitor interface
1297
1298 70 block SCSI disk devices (96-111)
1299          0 = /dev/sdcs 97th SCSI disk whole disk
1300         16 = /dev/sdct 98th SCSI disk whole disk
1301         32 = /dev/sdcu 99th SCSI disk whole disk
1302            ...
1303        240 = /dev/sddh 112nd SCSI disk whole disk
1304
1305        Partitions are handled in the same way as for IDE
1306        disks (see major number 3) except that the limit on
1307        partitions is 15.
1308
1309 71 char Computone IntelliPort II serial card
1310          0 = /dev/ttyF0 IntelliPort II board 0, port 0
1311          1 = /dev/ttyF1 IntelliPort II board 0, port 1
1312            ...
1313         63 = /dev/ttyF63 IntelliPort II board 0, port 63
1314         64 = /dev/ttyF64 IntelliPort II board 1, port 0
1315         65 = /dev/ttyF65 IntelliPort II board 1, port 1
1316            ...
1317        127 = /dev/ttyF127 IntelliPort II board 1, port 63
1318        128 = /dev/ttyF128 IntelliPort II board 2, port 0
1319        129 = /dev/ttyF129 IntelliPort II board 2, port 1
1320            ...
1321        191 = /dev/ttyF191 IntelliPort II board 2, port 63
1322        192 = /dev/ttyF192 IntelliPort II board 3, port 0
1323        193 = /dev/ttyF193 IntelliPort II board 3, port 1
1324            ...
1325        255 = /dev/ttyF255 IntelliPort II board 3, port 63
1326
1327 71 block SCSI disk devices (112-127)
1328          0 = /dev/sddi 113th SCSI disk whole disk
1329         16 = /dev/sddj 114th SCSI disk whole disk
1330         32 = /dev/sddk 115th SCSI disk whole disk
1331            ...
1332        240 = /dev/sddx 128th SCSI disk whole disk
1333
1334        Partitions are handled in the same way as for IDE
1335        disks (see major number 3) except that the limit on
1336        partitions is 15.
1337
1338 72 char Computone IntelliPort II serial card - alternate devices
1339          0 = /dev/cuf0 Callout device for ttyF0
1340          1 = /dev/cuf1 Callout device for ttyF1
1341            ...
1342         63 = /dev/cuf63 Callout device for ttyF63
1343         64 = /dev/cuf64 Callout device for ttyF64
1344         65 = /dev/cuf65 Callout device for ttyF65
1345            ...
1346        127 = /dev/cuf127 Callout device for ttyF127
1347        128 = /dev/cuf128 Callout device for ttyF128
1348        129 = /dev/cuf129 Callout device for ttyF129
1349            ...
1350        191 = /dev/cuf191 Callout device for ttyF191
1351        192 = /dev/cuf192 Callout device for ttyF192
1352        193 = /dev/cuf193 Callout device for ttyF193
1353            ...
1354        255 = /dev/cuf255 Callout device for ttyF255
1355
1356 72 block Compaq Intelligent Drive Array, first controller
1357          0 = /dev/ida/c0d0 First logical drive whole disk
1358         16 = /dev/ida/c0d1 Second logical drive whole disk
1359            ...
1360        240 = /dev/ida/c0d15 16th logical drive whole disk
1361
1362        Partitions are handled the same way as for Mylex
1363        DAC960 (see major number 48) except that the limit on
1364        partitions is 15.
1365
1366 73 char Computone IntelliPort II serial card - control devices
1367          0 = /dev/ip2ipl0 Loadware device for board 0
1368          1 = /dev/ip2stat0 Status device for board 0
1369          4 = /dev/ip2ipl1 Loadware device for board 1
1370          5 = /dev/ip2stat1 Status device for board 1
1371          8 = /dev/ip2ipl2 Loadware device for board 2
1372          9 = /dev/ip2stat2 Status device for board 2
1373         12 = /dev/ip2ipl3 Loadware device for board 3
1374         13 = /dev/ip2stat3 Status device for board 3
1375
1376 73 block Compaq Intelligent Drive Array, second controller
1377          0 = /dev/ida/c1d0 First logical drive whole disk
1378         16 = /dev/ida/c1d1 Second logical drive whole disk
1379            ...
1380        240 = /dev/ida/c1d15 16th logical drive whole disk
1381
1382        Partitions are handled the same way as for Mylex
1383        DAC960 (see major number 48) except that the limit on
1384        partitions is 15.
1385
1386 74 char SCI bridge
1387          0 = /dev/SCI/0 SCI device 0
1388          1 = /dev/SCI/1 SCI device 1
1389            ...
1390
1391        Currently for Dolphin Interconnect Solutions' PCI-SCI
1392        bridge.
1393
1394 74 block Compaq Intelligent Drive Array, third controller
1395          0 = /dev/ida/c2d0 First logical drive whole disk
1396         16 = /dev/ida/c2d1 Second logical drive whole disk
1397            ...
1398        240 = /dev/ida/c2d15 16th logical drive whole disk
1399
1400        Partitions are handled the same way as for Mylex
1401        DAC960 (see major number 48) except that the limit on
1402        partitions is 15.
1403
1404 75 char Specialix IO8+ serial card
1405          0 = /dev/ttyW0 First IO8+ port, first card
1406          1 = /dev/ttyW1 Second IO8+ port, first card
1407            ...
1408          8 = /dev/ttyW8 First IO8+ port, second card
1409            ...
1410
1411 75 block Compaq Intelligent Drive Array, fourth controller
1412          0 = /dev/ida/c3d0 First logical drive whole disk
1413         16 = /dev/ida/c3d1 Second logical drive whole disk
1414            ...
1415        240 = /dev/ida/c3d15 16th logical drive whole disk
1416
1417        Partitions are handled the same way as for Mylex
1418        DAC960 (see major number 48) except that the limit on
1419        partitions is 15.
1420
1421 76 char Specialix IO8+ serial card - alternate devices
1422          0 = /dev/cuw0 Callout device for ttyW0
1423          1 = /dev/cuw1 Callout device for ttyW1
1424            ...
1425          8 = /dev/cuw8 Callout device for ttyW8
1426            ...
1427
1428 76 block Compaq Intelligent Drive Array, fifth controller
1429          0 = /dev/ida/c4d0 First logical drive whole disk
1430         16 = /dev/ida/c4d1 Second logical drive whole disk
1431            ...
1432        240 = /dev/ida/c4d15 16th logical drive whole disk
1433
1434        Partitions are handled the same way as for Mylex
1435        DAC960 (see major number 48) except that the limit on
1436        partitions is 15.
1437
1438
1439 77 char ComScire Quantum Noise Generator
1440          0 = /dev/qng ComScire Quantum Noise Generator
1441
1442 77 block Compaq Intelligent Drive Array, sixth controller
1443          0 = /dev/ida/c5d0 First logical drive whole disk
1444         16 = /dev/ida/c5d1 Second logical drive whole disk
1445            ...
1446        240 = /dev/ida/c5d15 16th logical drive whole disk
1447
1448        Partitions are handled the same way as for Mylex
1449        DAC960 (see major number 48) except that the limit on
1450        partitions is 15.
1451
1452 78 char PAM Software's multimodem boards
1453          0 = /dev/ttyM0 First PAM modem
1454          1 = /dev/ttyM1 Second PAM modem
1455            ...
1456
1457 78 block Compaq Intelligent Drive Array, seventh controller
1458          0 = /dev/ida/c6d0 First logical drive whole disk
1459         16 = /dev/ida/c6d1 Second logical drive whole disk
1460            ...
1461        240 = /dev/ida/c6d15 16th logical drive whole disk
1462
1463        Partitions are handled the same way as for Mylex
1464        DAC960 (see major number 48) except that the limit on
1465        partitions is 15.
1466
1467 79 char PAM Software's multimodem boards - alternate devices
1468          0 = /dev/cum0 Callout device for ttyM0
1469          1 = /dev/cum1 Callout device for ttyM1
1470            ...
1471
1472 79 block Compaq Intelligent Drive Array, eighth controller
1473          0 = /dev/ida/c7d0 First logical drive whole disk
1474         16 = /dev/ida/c7d1 Second logical drive whole disk
1475            ...
1476        240 = /dev/ida/c715 16th logical drive whole disk
1477
1478        Partitions are handled the same way as for Mylex
1479        DAC960 (see major number 48) except that the limit on
1480        partitions is 15.
1481
1482 80 char Photometrics AT200 CCD camera
1483          0 = /dev/at200 Photometrics AT200 CCD camera
1484
1485 80 block I2O hard disk
1486          0 = /dev/i2o/hda First I2O hard disk, whole disk
1487         16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1488            ...
1489        240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1490
1491        Partitions are handled in the same way as for IDE
1492        disks (see major number 3) except that the limit on
1493        partitions is 15.
1494
1495 81 char video4linux
1496          0 = /dev/video0 Video capture/overlay device
1497            ...
1498         63 = /dev/video63 Video capture/overlay device
1499         64 = /dev/radio0 Radio device
1500            ...
1501        127 = /dev/radio63 Radio device
1502        224 = /dev/vbi0 Vertical blank interrupt
1503            ...
1504        255 = /dev/vbi31 Vertical blank interrupt
1505
1506 81 block I2O hard disk
1507          0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1508         16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1509            ...
1510        240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1511
1512        Partitions are handled in the same way as for IDE
1513        disks (see major number 3) except that the limit on
1514        partitions is 15.
1515
1516 82 char WiNRADiO communications receiver card
1517          0 = /dev/winradio0 First WiNRADiO card
1518          1 = /dev/winradio1 Second WiNRADiO card
1519            ...
1520
1521        The driver and documentation may be obtained from
1522        http://www.winradio.com/
1523
1524 82 block I2O hard disk
1525          0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1526         16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1527            ...
1528        240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1529
1530        Partitions are handled in the same way as for IDE
1531        disks (see major number 3) except that the limit on
1532        partitions is 15.
1533
1534 83 char Matrox mga_vid video driver
1535          0 = /dev/mga_vid0 1st video card
1536         1 = /dev/mga_vid1 2nd video card
1537         2 = /dev/mga_vid2 3rd video card
1538          ...
1539            15 = /dev/mga_vid15 16th video card
1540
1541 83 block I2O hard disk
1542          0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1543         16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1544            ...
1545        240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1546
1547        Partitions are handled in the same way as for IDE
1548        disks (see major number 3) except that the limit on
1549        partitions is 15.
1550
1551 84 char Ikon 1011[57] Versatec Greensheet Interface
1552          0 = /dev/ihcp0 First Greensheet port
1553          1 = /dev/ihcp1 Second Greensheet port
1554
1555 84 block I2O hard disk
1556          0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1557         16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1558            ...
1559        240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1560
1561        Partitions are handled in the same way as for IDE
1562        disks (see major number 3) except that the limit on
1563        partitions is 15.
1564
1565 85 char Linux/SGI shared memory input queue
1566          0 = /dev/shmiq Master shared input queue
1567          1 = /dev/qcntl0 First device pushed
1568          2 = /dev/qcntl1 Second device pushed
1569            ...
1570
1571 85 block I2O hard disk
1572          0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1573         16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1574            ...
1575        240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1576
1577        Partitions are handled in the same way as for IDE
1578        disks (see major number 3) except that the limit on
1579        partitions is 15.
1580
1581 86 char SCSI media changer
1582          0 = /dev/sch0 First SCSI media changer
1583          1 = /dev/sch1 Second SCSI media changer
1584            ...
1585
1586 86 block I2O hard disk
1587          0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1588         16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1589            ...
1590        240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1591
1592        Partitions are handled in the same way as for IDE
1593        disks (see major number 3) except that the limit on
1594        partitions is 15.
1595
1596 87 char Sony Control-A1 stereo control bus
1597          0 = /dev/controla0 First device on chain
1598          1 = /dev/controla1 Second device on chain
1599            ...
1600
1601 87 block I2O hard disk
1602          0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1603         16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1604            ...
1605        240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1606
1607        Partitions are handled in the same way as for IDE
1608        disks (see major number 3) except that the limit on
1609        partitions is 15.
1610
1611 88 char COMX synchronous serial card
1612          0 = /dev/comx0 COMX channel 0
1613          1 = /dev/comx1 COMX channel 1
1614            ...
1615
1616 88 block Seventh IDE hard disk/CD-ROM interface
1617          0 = /dev/hdm Master: whole disk (or CD-ROM)
1618         64 = /dev/hdn Slave: whole disk (or CD-ROM)
1619
1620        Partitions are handled the same way as for the first
1621        interface (see major number 3).
1622
1623 89 char I2C bus interface
1624          0 = /dev/i2c-0 First I2C adapter
1625          1 = /dev/i2c-1 Second I2C adapter
1626            ...
1627
1628 89 block Eighth IDE hard disk/CD-ROM interface
1629          0 = /dev/hdo Master: whole disk (or CD-ROM)
1630         64 = /dev/hdp Slave: whole disk (or CD-ROM)
1631
1632        Partitions are handled the same way as for the first
1633        interface (see major number 3).
1634
1635 90 char Memory Technology Device (RAM, ROM, Flash)
1636          0 = /dev/mtd0 First MTD (rw)
1637          1 = /dev/mtdr0 First MTD (ro)
1638            ...
1639         30 = /dev/mtd15 16th MTD (rw)
1640         31 = /dev/mtdr15 16th MTD (ro)
1641
1642 90 block Ninth IDE hard disk/CD-ROM interface
1643          0 = /dev/hdq Master: whole disk (or CD-ROM)
1644         64 = /dev/hdr Slave: whole disk (or CD-ROM)
1645
1646        Partitions are handled the same way as for the first
1647        interface (see major number 3).
1648
1649 91 char CAN-Bus devices
1650          0 = /dev/can0 First CAN-Bus controller
1651          1 = /dev/can1 Second CAN-Bus controller
1652            ...
1653
1654 91 block Tenth IDE hard disk/CD-ROM interface
1655          0 = /dev/hds Master: whole disk (or CD-ROM)
1656         64 = /dev/hdt Slave: whole disk (or CD-ROM)
1657
1658        Partitions are handled the same way as for the first
1659        interface (see major number 3).
1660
1661 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1662
1663 92 block PPDD encrypted disk driver
1664          0 = /dev/ppdd0 First encrypted disk
1665          1 = /dev/ppdd1 Second encrypted disk
1666            ...
1667
1668        Partitions are handled in the same way as for IDE
1669        disks (see major number 3) except that the limit on
1670        partitions is 15.
1671
1672 93 char
1673
1674 93 block NAND Flash Translation Layer filesystem
1675          0 = /dev/nftla First NFTL layer
1676         16 = /dev/nftlb Second NFTL layer
1677            ...
1678        240 = /dev/nftlp 16th NTFL layer
1679
1680 94 char
1681
1682 94 block IBM S/390 DASD block storage
1683              0 = /dev/dasda First DASD device, major
1684              1 = /dev/dasda1 First DASD device, block 1
1685              2 = /dev/dasda2 First DASD device, block 2
1686              3 = /dev/dasda3 First DASD device, block 3
1687              4 = /dev/dasdb Second DASD device, major
1688              5 = /dev/dasdb1 Second DASD device, block 1
1689              6 = /dev/dasdb2 Second DASD device, block 2
1690              7 = /dev/dasdb3 Second DASD device, block 3
1691            ...
1692
1693 95 char IP filter
1694          0 = /dev/ipl Filter control device/log file
1695          1 = /dev/ipnat NAT control device/log file
1696          2 = /dev/ipstate State information log file
1697          3 = /dev/ipauth Authentication control device/log file
1698            ...
1699
1700 96 char Parallel port ATAPI tape devices
1701          0 = /dev/pt0 First parallel port ATAPI tape
1702          1 = /dev/pt1 Second parallel port ATAPI tape
1703            ...
1704        128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1705        129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1706            ...
1707
1708 96 block Inverse NAND Flash Translation Layer
1709          0 = /dev/inftla First INFTL layer
1710         16 = /dev/inftlb Second INFTL layer
1711            ...
1712        240 = /dev/inftlp 16th INTFL layer
1713
1714 97 char Parallel port generic ATAPI interface
1715          0 = /dev/pg0 First parallel port ATAPI device
1716          1 = /dev/pg1 Second parallel port ATAPI device
1717          2 = /dev/pg2 Third parallel port ATAPI device
1718          3 = /dev/pg3 Fourth parallel port ATAPI device
1719
1720        These devices support the same API as the generic SCSI
1721        devices.
1722
1723 98 char Control and Measurement Device (comedi)
1724          0 = /dev/comedi0 First comedi device
1725          1 = /dev/comedi1 Second comedi device
1726            ...
1727
1728        See http://stm.lbl.gov/comedi.
1729
1730 98 block User-mode virtual block device
1731          0 = /dev/ubda First user-mode block device
1732         16 = /dev/udbb Second user-mode block device
1733            ...
1734
1735        Partitions are handled in the same way as for IDE
1736        disks (see major number 3) except that the limit on
1737        partitions is 15.
1738
1739        This device is used by the user-mode virtual kernel port.
1740
1741 99 char Raw parallel ports
1742          0 = /dev/parport0 First parallel port
1743          1 = /dev/parport1 Second parallel port
1744            ...
1745
1746 99 block JavaStation flash disk
1747          0 = /dev/jsfd JavaStation flash disk
1748
1749100 char Telephony for Linux
1750          0 = /dev/phone0 First telephony device
1751          1 = /dev/phone1 Second telephony device
1752            ...
1753
1754101 char Motorola DSP 56xxx board
1755          0 = /dev/mdspstat Status information
1756          1 = /dev/mdsp1 First DSP board I/O controls
1757            ...
1758         16 = /dev/mdsp16 16th DSP board I/O controls
1759
1760101 block AMI HyperDisk RAID controller
1761          0 = /dev/amiraid/ar0 First array whole disk
1762         16 = /dev/amiraid/ar1 Second array whole disk
1763            ...
1764        240 = /dev/amiraid/ar15 16th array whole disk
1765
1766        For each device, partitions are added as:
1767          0 = /dev/amiraid/ar? Whole disk
1768          1 = /dev/amiraid/ar?p1 First partition
1769          2 = /dev/amiraid/ar?p2 Second partition
1770            ...
1771         15 = /dev/amiraid/ar?p15 15th partition
1772
1773102 char
1774
1775102 block Compressed block device
1776          0 = /dev/cbd/a First compressed block device, whole device
1777         16 = /dev/cbd/b Second compressed block device, whole device
1778            ...
1779        240 = /dev/cbd/p 16th compressed block device, whole device
1780
1781        Partitions are handled in the same way as for IDE
1782        disks (see major number 3) except that the limit on
1783        partitions is 15.
1784
1785103 char Arla network file system
1786          0 = /dev/nnpfs0 First NNPFS device
1787          1 = /dev/nnpfs1 Second NNPFS device
1788
1789        Arla is a free clone of the Andrew File System, AFS.
1790        The NNPFS device gives user mode filesystem
1791        implementations a kernel presence for caching and easy
1792        mounting. For more information about the project,
1793        write to <arla-drinkers@stacken.kth.se> or see
1794        http://www.stacken.kth.se/project/arla/
1795
1796103 block Audit device
1797          0 = /dev/audit Audit device
1798
1799104 char Flash BIOS support
1800
1801104 block Compaq Next Generation Drive Array, first controller
1802          0 = /dev/cciss/c0d0 First logical drive, whole disk
1803         16 = /dev/cciss/c0d1 Second logical drive, whole disk
1804            ...
1805        240 = /dev/cciss/c0d15 16th logical drive, whole disk
1806
1807        Partitions are handled the same way as for Mylex
1808        DAC960 (see major number 48) except that the limit on
1809        partitions is 15.
1810
1811105 char Comtrol VS-1000 serial controller
1812          0 = /dev/ttyV0 First VS-1000 port
1813          1 = /dev/ttyV1 Second VS-1000 port
1814            ...
1815
1816105 block Compaq Next Generation Drive Array, second controller
1817          0 = /dev/cciss/c1d0 First logical drive, whole disk
1818         16 = /dev/cciss/c1d1 Second logical drive, whole disk
1819            ...
1820        240 = /dev/cciss/c1d15 16th logical drive, whole disk
1821
1822        Partitions are handled the same way as for Mylex
1823        DAC960 (see major number 48) except that the limit on
1824        partitions is 15.
1825
1826106 char Comtrol VS-1000 serial controller - alternate devices
1827          0 = /dev/cuv0 First VS-1000 port
1828          1 = /dev/cuv1 Second VS-1000 port
1829            ...
1830
1831106 block Compaq Next Generation Drive Array, third controller
1832          0 = /dev/cciss/c2d0 First logical drive, whole disk
1833         16 = /dev/cciss/c2d1 Second logical drive, whole disk
1834            ...
1835        240 = /dev/cciss/c2d15 16th logical drive, whole disk
1836
1837        Partitions are handled the same way as for Mylex
1838        DAC960 (see major number 48) except that the limit on
1839        partitions is 15.
1840
1841107 char 3Dfx Voodoo Graphics device
1842          0 = /dev/3dfx Primary 3Dfx graphics device
1843
1844107 block Compaq Next Generation Drive Array, fourth controller
1845          0 = /dev/cciss/c3d0 First logical drive, whole disk
1846         16 = /dev/cciss/c3d1 Second logical drive, whole disk
1847            ...
1848        240 = /dev/cciss/c3d15 16th logical drive, whole disk
1849
1850        Partitions are handled the same way as for Mylex
1851        DAC960 (see major number 48) except that the limit on
1852        partitions is 15.
1853
1854108 char Device independent PPP interface
1855          0 = /dev/ppp Device independent PPP interface
1856
1857108 block Compaq Next Generation Drive Array, fifth controller
1858          0 = /dev/cciss/c4d0 First logical drive, whole disk
1859         16 = /dev/cciss/c4d1 Second logical drive, whole disk
1860            ...
1861        240 = /dev/cciss/c4d15 16th logical drive, whole disk
1862
1863        Partitions are handled the same way as for Mylex
1864        DAC960 (see major number 48) except that the limit on
1865        partitions is 15.
1866
1867109 char Reserved for logical volume manager
1868
1869109 block Compaq Next Generation Drive Array, sixth controller
1870          0 = /dev/cciss/c5d0 First logical drive, whole disk
1871         16 = /dev/cciss/c5d1 Second logical drive, whole disk
1872            ...
1873        240 = /dev/cciss/c5d15 16th logical drive, whole disk
1874
1875        Partitions are handled the same way as for Mylex
1876        DAC960 (see major number 48) except that the limit on
1877        partitions is 15.
1878
1879110 char miroMEDIA Surround board
1880          0 = /dev/srnd0 First miroMEDIA Surround board
1881          1 = /dev/srnd1 Second miroMEDIA Surround board
1882            ...
1883
1884110 block Compaq Next Generation Drive Array, seventh controller
1885          0 = /dev/cciss/c6d0 First logical drive, whole disk
1886         16 = /dev/cciss/c6d1 Second logical drive, whole disk
1887            ...
1888        240 = /dev/cciss/c6d15 16th logical drive, whole disk
1889
1890        Partitions are handled the same way as for Mylex
1891        DAC960 (see major number 48) except that the limit on
1892        partitions is 15.
1893
1894111 char
1895
1896111 block Compaq Next Generation Drive Array, eighth controller
1897          0 = /dev/cciss/c7d0 First logical drive, whole disk
1898         16 = /dev/cciss/c7d1 Second logical drive, whole disk
1899            ...
1900        240 = /dev/cciss/c7d15 16th logical drive, whole disk
1901
1902        Partitions are handled the same way as for Mylex
1903        DAC960 (see major number 48) except that the limit on
1904        partitions is 15.
1905
1906112 char ISI serial card
1907          0 = /dev/ttyM0 First ISI port
1908          1 = /dev/ttyM1 Second ISI port
1909            ...
1910
1911        There is currently a device-naming conflict between
1912        these and PAM multimodems (major 78).
1913
1914112 block IBM iSeries virtual disk
1915          0 = /dev/iseries/vda First virtual disk, whole disk
1916          8 = /dev/iseries/vdb Second virtual disk, whole disk
1917            ...
1918        200 = /dev/iseries/vdz 26th virtual disk, whole disk
1919        208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1920            ...
1921        248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1922
1923        Partitions are handled in the same way as for IDE
1924        disks (see major number 3) except that the limit on
1925        partitions is 7.
1926
1927113 char ISI serial card - alternate devices
1928          0 = /dev/cum0 Callout device for ttyM0
1929          1 = /dev/cum1 Callout device for ttyM1
1930            ...
1931
1932113 block IBM iSeries virtual CD-ROM
1933          0 = /dev/iseries/vcda First virtual CD-ROM
1934          1 = /dev/iseries/vcdb Second virtual CD-ROM
1935            ...
1936
1937114 char Picture Elements ISE board
1938          0 = /dev/ise0 First ISE board
1939          1 = /dev/ise1 Second ISE board
1940            ...
1941        128 = /dev/isex0 Control node for first ISE board
1942        129 = /dev/isex1 Control node for second ISE board
1943            ...
1944
1945        The ISE board is an embedded computer, optimized for
1946        image processing. The /dev/iseN nodes are the general
1947        I/O access to the board, the /dev/isex0 nodes command
1948        nodes used to control the board.
1949
1950114 block IDE BIOS powered software RAID interfaces such as the
1951                Promise Fastrak
1952
1953                  0 = /dev/ataraid/d0
1954                  1 = /dev/ataraid/d0p1
1955                  2 = /dev/ataraid/d0p2
1956                  ...
1957                 16 = /dev/ataraid/d1
1958                 17 = /dev/ataraid/d1p1
1959                 18 = /dev/ataraid/d1p2
1960                  ...
1961                255 = /dev/ataraid/d15p15
1962
1963        Partitions are handled in the same way as for IDE
1964        disks (see major number 3) except that the limit on
1965        partitions is 15.
1966
1967115 char TI link cable devices (115 was formerly the console driver speaker)
1968          0 = /dev/tipar0 Parallel cable on first parallel port
1969          ...
1970          7 = /dev/tipar7 Parallel cable on seventh parallel port
1971
1972          8 = /dev/tiser0 Serial cable on first serial port
1973          ...
1974         15 = /dev/tiser7 Serial cable on seventh serial port
1975
1976         16 = /dev/tiusb0 First USB cable
1977          ...
1978         47 = /dev/tiusb31 32nd USB cable
1979
1980115 block NetWare (NWFS) Devices (0-255)
1981
1982                The NWFS (NetWare) devices are used to present a
1983                collection of NetWare Mirror Groups or NetWare
1984                Partitions as a logical storage segment for
1985                use in mounting NetWare volumes. A maximum of
1986                256 NetWare volumes can be supported in a single
1987                machine.
1988
1989                http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1990
1991                0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1992                1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1993                2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1994                      ...
1995                255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1996
1997116 char Advanced Linux Sound Driver (ALSA)
1998
1999116 block MicroMemory battery backed RAM adapter (NVRAM)
2000                Supports 16 boards, 15 partitions each.
2001                Requested by neilb at cse.unsw.edu.au.
2002
2003         0 = /dev/umem/d0 Whole of first board
2004         1 = /dev/umem/d0p1 First partition of first board
2005         2 = /dev/umem/d0p2 Second partition of first board
2006        15 = /dev/umem/d0p15 15th partition of first board
2007
2008        16 = /dev/umem/d1 Whole of second board
2009        17 = /dev/umem/d1p1 First partition of second board
2010            ...
2011        255= /dev/umem/d15p15 15th partition of 16th board.
2012
2013117 char COSA/SRP synchronous serial card
2014          0 = /dev/cosa0c0 1st board, 1st channel
2015          1 = /dev/cosa0c1 1st board, 2nd channel
2016            ...
2017         16 = /dev/cosa1c0 2nd board, 1st channel
2018         17 = /dev/cosa1c1 2nd board, 2nd channel
2019            ...
2020
2021117 block Enterprise Volume Management System (EVMS)
2022
2023                The EVMS driver uses a layered, plug-in model to provide
2024                unparalleled flexibility and extensibility in managing
2025                storage. This allows for easy expansion or customization
2026                of various levels of volume management. Requested by
2027                Mark Peloquin (peloquin at us.ibm.com).
2028
2029                Note: EVMS populates and manages all the devnodes in
2030                /dev/evms.
2031
2032                http://sf.net/projects/evms
2033
2034                  0 = /dev/evms/block_device EVMS block device
2035                  1 = /dev/evms/legacyname1 First EVMS legacy device
2036                  2 = /dev/evms/legacyname2 Second EVMS legacy device
2037                    ...
2038                    Both ranges can grow (down or up) until they meet.
2039                    ...
2040                254 = /dev/evms/EVMSname2 Second EVMS native device
2041                255 = /dev/evms/EVMSname1 First EVMS native device
2042
2043                Note: legacyname(s) are derived from the normal legacy
2044                device names. For example, /dev/hda5 would become
2045                /dev/evms/hda5.
2046
2047118 char IBM Cryptographic Accelerator
2048          0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2049          1 = /dev/ica0 IBMCA Device 0
2050          2 = /dev/ica1 IBMCA Device 1
2051            ...
2052
2053119 char VMware virtual network control
2054          0 = /dev/vnet0 1st virtual network
2055          1 = /dev/vnet1 2nd virtual network
2056            ...
2057
2058120-127 char LOCAL/EXPERIMENTAL USE
2059
2060120-127 block LOCAL/EXPERIMENTAL USE
2061        Allocated for local/experimental use. For devices not
2062        assigned official numbers, these ranges should be
2063        used in order to avoid conflicting with future assignments.
2064
2065128-135 char Unix98 PTY masters
2066
2067        These devices should not have corresponding device
2068        nodes; instead they should be accessed through the
2069        /dev/ptmx cloning interface.
2070
2071128 block SCSI disk devices (128-143)
2072                  0 = /dev/sddy 129th SCSI disk whole disk
2073                 16 = /dev/sddz 130th SCSI disk whole disk
2074                 32 = /dev/sdea 131th SCSI disk whole disk
2075                    ...
2076                240 = /dev/sden 144th SCSI disk whole disk
2077
2078        Partitions are handled in the same way as for IDE
2079        disks (see major number 3) except that the limit on
2080        partitions is 15.
2081
2082129 block SCSI disk devices (144-159)
2083                  0 = /dev/sdeo 145th SCSI disk whole disk
2084                 16 = /dev/sdep 146th SCSI disk whole disk
2085                 32 = /dev/sdeq 147th SCSI disk whole disk
2086                    ...
2087                240 = /dev/sdfd 160th SCSI disk whole disk
2088
2089        Partitions are handled in the same way as for IDE
2090        disks (see major number 3) except that the limit on
2091        partitions is 15.
2092
2093130 char (Misc devices)
2094
2095130 block SCSI disk devices (160-175)
2096                  0 = /dev/sdfe 161st SCSI disk whole disk
2097                 16 = /dev/sdff 162nd SCSI disk whole disk
2098                 32 = /dev/sdfg 163rd SCSI disk whole disk
2099                    ...
2100                240 = /dev/sdft 176th SCSI disk whole disk
2101
2102        Partitions are handled in the same way as for IDE
2103        disks (see major number 3) except that the limit on
2104        partitions is 15.
2105
2106131 block SCSI disk devices (176-191)
2107                  0 = /dev/sdfu 177th SCSI disk whole disk
2108                 16 = /dev/sdfv 178th SCSI disk whole disk
2109                 32 = /dev/sdfw 179th SCSI disk whole disk
2110                    ...
2111                240 = /dev/sdgj 192nd SCSI disk whole disk
2112
2113        Partitions are handled in the same way as for IDE
2114        disks (see major number 3) except that the limit on
2115        partitions is 15.
2116
2117132 block SCSI disk devices (192-207)
2118                  0 = /dev/sdgk 193rd SCSI disk whole disk
2119                 16 = /dev/sdgl 194th SCSI disk whole disk
2120                 32 = /dev/sdgm 195th SCSI disk whole disk
2121                    ...
2122                240 = /dev/sdgz 208th SCSI disk whole disk
2123
2124        Partitions are handled in the same way as for IDE
2125        disks (see major number 3) except that the limit on
2126        partitions is 15.
2127
2128133 block SCSI disk devices (208-223)
2129                  0 = /dev/sdha 209th SCSI disk whole disk
2130                 16 = /dev/sdhb 210th SCSI disk whole disk
2131                 32 = /dev/sdhc 211th SCSI disk whole disk
2132                    ...
2133                240 = /dev/sdhp 224th SCSI disk whole disk
2134
2135        Partitions are handled in the same way as for IDE
2136        disks (see major number 3) except that the limit on
2137        partitions is 15.
2138
2139134 block SCSI disk devices (224-239)
2140                  0 = /dev/sdhq 225th SCSI disk whole disk
2141                 16 = /dev/sdhr 226th SCSI disk whole disk
2142                 32 = /dev/sdhs 227th SCSI disk whole disk
2143                    ...
2144                240 = /dev/sdif 240th SCSI disk whole disk
2145
2146        Partitions are handled in the same way as for IDE
2147        disks (see major number 3) except that the limit on
2148        partitions is 15.
2149
2150135 block SCSI disk devices (240-255)
2151                  0 = /dev/sdig 241st SCSI disk whole disk
2152                 16 = /dev/sdih 242nd SCSI disk whole disk
2153                 32 = /dev/sdih 243rd SCSI disk whole disk
2154                    ...
2155                240 = /dev/sdiv 256th SCSI disk whole disk
2156
2157        Partitions are handled in the same way as for IDE
2158        disks (see major number 3) except that the limit on
2159        partitions is 15.
2160
2161136-143 char Unix98 PTY slaves
2162          0 = /dev/pts/0 First Unix98 pseudo-TTY
2163          1 = /dev/pts/1 Second Unix98 pseudo-TTY
2164            ...
2165
2166        These device nodes are automatically generated with
2167        the proper permissions and modes by mounting the
2168        devpts filesystem onto /dev/pts with the appropriate
2169        mount options (distribution dependent, however, on
2170        *most* distributions the appropriate options are
2171        "mode=0620,gid=<gid of the "tty" group>".)
2172
2173136 block Mylex DAC960 PCI RAID controller; ninth controller
2174          0 = /dev/rd/c8d0 First disk, whole disk
2175          8 = /dev/rd/c8d1 Second disk, whole disk
2176            ...
2177        248 = /dev/rd/c8d31 32nd disk, whole disk
2178
2179        Partitions are handled as for major 48.
2180
2181137 block Mylex DAC960 PCI RAID controller; tenth controller
2182          0 = /dev/rd/c9d0 First disk, whole disk
2183          8 = /dev/rd/c9d1 Second disk, whole disk
2184            ...
2185        248 = /dev/rd/c9d31 32nd disk, whole disk
2186
2187        Partitions are handled as for major 48.
2188
2189138 block Mylex DAC960 PCI RAID controller; eleventh controller
2190          0 = /dev/rd/c10d0 First disk, whole disk
2191          8 = /dev/rd/c10d1 Second disk, whole disk
2192            ...
2193        248 = /dev/rd/c10d31 32nd disk, whole disk
2194
2195        Partitions are handled as for major 48.
2196
2197139 block Mylex DAC960 PCI RAID controller; twelfth controller
2198          0 = /dev/rd/c11d0 First disk, whole disk
2199          8 = /dev/rd/c11d1 Second disk, whole disk
2200            ...
2201        248 = /dev/rd/c11d31 32nd disk, whole disk
2202
2203        Partitions are handled as for major 48.
2204
2205140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2206          0 = /dev/rd/c12d0 First disk, whole disk
2207          8 = /dev/rd/c12d1 Second disk, whole disk
2208            ...
2209        248 = /dev/rd/c12d31 32nd disk, whole disk
2210
2211        Partitions are handled as for major 48.
2212
2213141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2214          0 = /dev/rd/c13d0 First disk, whole disk
2215          8 = /dev/rd/c13d1 Second disk, whole disk
2216            ...
2217        248 = /dev/rd/c13d31 32nd disk, whole disk
2218
2219        Partitions are handled as for major 48.
2220
2221142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2222          0 = /dev/rd/c14d0 First disk, whole disk
2223          8 = /dev/rd/c14d1 Second disk, whole disk
2224            ...
2225        248 = /dev/rd/c14d31 32nd disk, whole disk
2226
2227        Partitions are handled as for major 48.
2228
2229143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2230          0 = /dev/rd/c15d0 First disk, whole disk
2231          8 = /dev/rd/c15d1 Second disk, whole disk
2232            ...
2233        248 = /dev/rd/c15d31 32nd disk, whole disk
2234
2235        Partitions are handled as for major 48.
2236
2237144 char Encapsulated PPP
2238          0 = /dev/pppox0 First PPP over Ethernet
2239            ...
2240         63 = /dev/pppox63 64th PPP over Ethernet
2241
2242        This is primarily used for ADSL.
2243
2244        The SST 5136-DN DeviceNet interface driver has been
2245        relocated to major 183 due to an unfortunate conflict.
2246
2247144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2248          0 = mounted device 256
2249        255 = mounted device 511
2250
2251145 char SAM9407-based soundcard
2252          0 = /dev/sam0_mixer
2253          1 = /dev/sam0_sequencer
2254          2 = /dev/sam0_midi00
2255          3 = /dev/sam0_dsp
2256          4 = /dev/sam0_audio
2257          6 = /dev/sam0_sndstat
2258         18 = /dev/sam0_midi01
2259         34 = /dev/sam0_midi02
2260         50 = /dev/sam0_midi03
2261         64 = /dev/sam1_mixer
2262            ...
2263        128 = /dev/sam2_mixer
2264            ...
2265        192 = /dev/sam3_mixer
2266            ...
2267
2268        Device functions match OSS, but offer a number of
2269        addons, which are sam9407 specific. OSS can be
2270        operated simultaneously, taking care of the codec.
2271
2272145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2273          0 = mounted device 512
2274        255 = mounted device 767
2275
2276146 char SYSTRAM SCRAMNet mirrored-memory network
2277          0 = /dev/scramnet0 First SCRAMNet device
2278          1 = /dev/scramnet1 Second SCRAMNet device
2279            ...
2280
2281146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2282          0 = mounted device 768
2283        255 = mounted device 1023
2284
2285147 char Aureal Semiconductor Vortex Audio device
2286          0 = /dev/aureal0 First Aureal Vortex
2287          1 = /dev/aureal1 Second Aureal Vortex
2288            ...
2289
2290147 block Distributed Replicated Block Device (DRBD)
2291          0 = /dev/drbd0 First DRBD device
2292          1 = /dev/drbd1 Second DRBD device
2293            ...
2294
2295148 char Technology Concepts serial card
2296          0 = /dev/ttyT0 First TCL port
2297          1 = /dev/ttyT1 Second TCL port
2298            ...
2299
2300149 char Technology Concepts serial card - alternate devices
2301          0 = /dev/cut0 Callout device for ttyT0
2302          1 = /dev/cut0 Callout device for ttyT1
2303            ...
2304
2305150 char Real-Time Linux FIFOs
2306          0 = /dev/rtf0 First RTLinux FIFO
2307          1 = /dev/rtf1 Second RTLinux FIFO
2308            ...
2309
2310151 char DPT I2O SmartRaid V controller
2311          0 = /dev/dpti0 First DPT I2O adapter
2312          1 = /dev/dpti1 Second DPT I2O adapter
2313            ...
2314
2315152 char EtherDrive Control Device
2316          0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2317          1 = /dev/etherd/err Monitor errors
2318          2 = /dev/etherd/raw Raw AoE packet monitor
2319
2320152 block EtherDrive Block Devices
2321          0 = /dev/etherd/0 EtherDrive 0
2322            ...
2323        255 = /dev/etherd/255 EtherDrive 255
2324
2325153 char SPI Bus Interface (sometimes referred to as MicroWire)
2326          0 = /dev/spi0 First SPI device on the bus
2327          1 = /dev/spi1 Second SPI device on the bus
2328            ...
2329         15 = /dev/spi15 Sixteenth SPI device on the bus
2330
2331153 block Enhanced Metadisk RAID (EMD) storage units
2332          0 = /dev/emd/0 First unit
2333          1 = /dev/emd/0p1 Partition 1 on First unit
2334          2 = /dev/emd/0p2 Partition 2 on First unit
2335            ...
2336         15 = /dev/emd/0p15 Partition 15 on First unit
2337
2338         16 = /dev/emd/1 Second unit
2339         32 = /dev/emd/2 Third unit
2340            ...
2341        240 = /dev/emd/15 Sixteenth unit
2342
2343        Partitions are handled in the same way as for IDE
2344        disks (see major number 3) except that the limit on
2345        partitions is 15.
2346
2347154 char Specialix RIO serial card
2348          0 = /dev/ttySR0 First RIO port
2349            ...
2350        255 = /dev/ttySR255 256th RIO port
2351
2352155 char Specialix RIO serial card - alternate devices
2353          0 = /dev/cusr0 Callout device for ttySR0
2354            ...
2355        255 = /dev/cusr255 Callout device for ttySR255
2356
2357156 char Specialix RIO serial card
2358          0 = /dev/ttySR256 257th RIO port
2359            ...
2360        255 = /dev/ttySR511 512th RIO port
2361
2362157 char Specialix RIO serial card - alternate devices
2363          0 = /dev/cusr256 Callout device for ttySR256
2364            ...
2365        255 = /dev/cusr511 Callout device for ttySR511
2366
2367158 char Dialogic GammaLink fax driver
2368          0 = /dev/gfax0 GammaLink channel 0
2369          1 = /dev/gfax1 GammaLink channel 1
2370            ...
2371
2372159 char RESERVED
2373
2374159 block RESERVED
2375
2376160 char General Purpose Instrument Bus (GPIB)
2377          0 = /dev/gpib0 First GPIB bus
2378          1 = /dev/gpib1 Second GPIB bus
2379            ...
2380
2381160 block Carmel 8-port SATA Disks on First Controller
2382          0 = /dev/carmel/0 SATA disk 0 whole disk
2383          1 = /dev/carmel/0p1 SATA disk 0 partition 1
2384            ...
2385         31 = /dev/carmel/0p31 SATA disk 0 partition 31
2386
2387         32 = /dev/carmel/1 SATA disk 1 whole disk
2388         64 = /dev/carmel/2 SATA disk 2 whole disk
2389            ...
2390        224 = /dev/carmel/7 SATA disk 7 whole disk
2391
2392        Partitions are handled in the same way as for IDE
2393        disks (see major number 3) except that the limit on
2394        partitions is 31.
2395
2396161 char IrCOMM devices (IrDA serial/parallel emulation)
2397          0 = /dev/ircomm0 First IrCOMM device
2398          1 = /dev/ircomm1 Second IrCOMM device
2399            ...
2400         16 = /dev/irlpt0 First IrLPT device
2401         17 = /dev/irlpt1 Second IrLPT device
2402            ...
2403
2404161 block Carmel 8-port SATA Disks on Second Controller
2405          0 = /dev/carmel/8 SATA disk 8 whole disk
2406          1 = /dev/carmel/8p1 SATA disk 8 partition 1
2407            ...
2408         31 = /dev/carmel/8p31 SATA disk 8 partition 31
2409
2410         32 = /dev/carmel/9 SATA disk 9 whole disk
2411         64 = /dev/carmel/10 SATA disk 10 whole disk
2412            ...
2413        224 = /dev/carmel/15 SATA disk 15 whole disk
2414
2415        Partitions are handled in the same way as for IDE
2416        disks (see major number 3) except that the limit on
2417        partitions is 31.
2418
2419162 char Raw block device interface
2420          0 = /dev/rawctl Raw I/O control device
2421          1 = /dev/raw/raw1 First raw I/O device
2422          2 = /dev/raw/raw2 Second raw I/O device
2423            ...
2424
2425163 char
2426
2427164 char Chase Research AT/PCI-Fast serial card
2428          0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2429            ...
2430         15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2431         16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2432            ...
2433         31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2434         32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2435            ...
2436         47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2437         48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2438            ...
2439         63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2440
2441165 char Chase Research AT/PCI-Fast serial card - alternate devices
2442          0 = /dev/cuch0 Callout device for ttyCH0
2443            ...
2444         63 = /dev/cuch63 Callout device for ttyCH63
2445
2446166 char ACM USB modems
2447          0 = /dev/ttyACM0 First ACM modem
2448          1 = /dev/ttyACM1 Second ACM modem
2449            ...
2450
2451167 char ACM USB modems - alternate devices
2452          0 = /dev/cuacm0 Callout device for ttyACM0
2453          1 = /dev/cuacm1 Callout device for ttyACM1
2454            ...
2455
2456168 char Eracom CSA7000 PCI encryption adaptor
2457          0 = /dev/ecsa0 First CSA7000
2458          1 = /dev/ecsa1 Second CSA7000
2459            ...
2460
2461169 char Eracom CSA8000 PCI encryption adaptor
2462          0 = /dev/ecsa8-0 First CSA8000
2463          1 = /dev/ecsa8-1 Second CSA8000
2464            ...
2465
2466170 char AMI MegaRAC remote access controller
2467          0 = /dev/megarac0 First MegaRAC card
2468          1 = /dev/megarac1 Second MegaRAC card
2469            ...
2470
2471171 char Reserved for IEEE 1394 (Firewire)
2472
2473172 char Moxa Intellio serial card
2474          0 = /dev/ttyMX0 First Moxa port
2475          1 = /dev/ttyMX1 Second Moxa port
2476            ...
2477        127 = /dev/ttyMX127 128th Moxa port
2478        128 = /dev/moxactl Moxa control port
2479
2480173 char Moxa Intellio serial card - alternate devices
2481          0 = /dev/cumx0 Callout device for ttyMX0
2482          1 = /dev/cumx1 Callout device for ttyMX1
2483            ...
2484        127 = /dev/cumx127 Callout device for ttyMX127
2485
2486174 char SmartIO serial card
2487          0 = /dev/ttySI0 First SmartIO port
2488          1 = /dev/ttySI1 Second SmartIO port
2489            ...
2490
2491175 char SmartIO serial card - alternate devices
2492          0 = /dev/cusi0 Callout device for ttySI0
2493          1 = /dev/cusi1 Callout device for ttySI1
2494            ...
2495
2496176 char nCipher nFast PCI crypto accelerator
2497          0 = /dev/nfastpci0 First nFast PCI device
2498          1 = /dev/nfastpci1 First nFast PCI device
2499            ...
2500
2501177 char TI PCILynx memory spaces
2502          0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2503            ...
2504         15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2505         16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2506            ...
2507         31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2508         32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2509            ...
2510         47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2511
2512178 char Giganet cLAN1xxx virtual interface adapter
2513          0 = /dev/clanvi0 First cLAN adapter
2514          1 = /dev/clanvi1 Second cLAN adapter
2515            ...
2516
2517179 block MMC block devices
2518          0 = /dev/mmcblk0 First SD/MMC card
2519          1 = /dev/mmcblk0p1 First partition on first MMC card
2520          8 = /dev/mmcblk1 Second SD/MMC card
2521            ...
2522
2523        The start of next SD/MMC card can be configured with
2524        CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2525        time using the mmcblk.perdev_minors option. That would
2526        bump the offset between each card to be the configured
2527        value instead of the default 8.
2528
2529179 char CCube DVXChip-based PCI products
2530          0 = /dev/dvxirq0 First DVX device
2531          1 = /dev/dvxirq1 Second DVX device
2532            ...
2533
2534180 char USB devices
2535          0 = /dev/usb/lp0 First USB printer
2536            ...
2537         15 = /dev/usb/lp15 16th USB printer
2538         48 = /dev/usb/scanner0 First USB scanner
2539            ...
2540         63 = /dev/usb/scanner15 16th USB scanner
2541         64 = /dev/usb/rio500 Diamond Rio 500
2542         65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2543         66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2544         96 = /dev/usb/hiddev0 1st USB HID device
2545            ...
2546        111 = /dev/usb/hiddev15 16th USB HID device
2547        112 = /dev/usb/auer0 1st auerswald ISDN device
2548            ...
2549        127 = /dev/usb/auer15 16th auerswald ISDN device
2550        128 = /dev/usb/brlvgr0 First Braille Voyager device
2551            ...
2552        131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2553        132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2554        133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2555            ...
2556        140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2557        144 = /dev/usb/lcd USB LCD device
2558        160 = /dev/usb/legousbtower0 1st USB Legotower device
2559            ...
2560        175 = /dev/usb/legousbtower15 16th USB Legotower device
2561        176 = /dev/usb/usbtmc1 First USB TMC device
2562           ...
2563        191 = /dev/usb/usbtmc16 16th USB TMC device
2564        192 = /dev/usb/yurex1 First USB Yurex device
2565           ...
2566        209 = /dev/usb/yurex16 16th USB Yurex device
2567        240 = /dev/usb/dabusb0 First daubusb device
2568            ...
2569        243 = /dev/usb/dabusb3 Fourth dabusb device
2570
2571180 block USB block devices
2572          0 = /dev/uba First USB block device
2573          8 = /dev/ubb Second USB block device
2574         16 = /dev/ubc Third USB block device
2575             ...
2576
2577181 char Conrad Electronic parallel port radio clocks
2578          0 = /dev/pcfclock0 First Conrad radio clock
2579          1 = /dev/pcfclock1 Second Conrad radio clock
2580            ...
2581
2582182 char Picture Elements THR2 binarizer
2583          0 = /dev/pethr0 First THR2 board
2584          1 = /dev/pethr1 Second THR2 board
2585            ...
2586
2587183 char SST 5136-DN DeviceNet interface
2588          0 = /dev/ss5136dn0 First DeviceNet interface
2589          1 = /dev/ss5136dn1 Second DeviceNet interface
2590            ...
2591
2592        This device used to be assigned to major number 144.
2593        It had to be moved due to an unfortunate conflict.
2594
2595184 char Picture Elements' video simulator/sender
2596          0 = /dev/pevss0 First sender board
2597          1 = /dev/pevss1 Second sender board
2598            ...
2599
2600185 char InterMezzo high availability file system
2601          0 = /dev/intermezzo0 First cache manager
2602          1 = /dev/intermezzo1 Second cache manager
2603            ...
2604
2605        See http://web.archive.org/web/20080115195241/
2606        http://inter-mezzo.org/index.html
2607
2608186 char Object-based storage control device
2609          0 = /dev/obd0 First obd control device
2610          1 = /dev/obd1 Second obd control device
2611            ...
2612
2613        See ftp://ftp.lustre.org/pub/obd for code and information.
2614
2615187 char DESkey hardware encryption device
2616          0 = /dev/deskey0 First DES key
2617          1 = /dev/deskey1 Second DES key
2618            ...
2619
2620188 char USB serial converters
2621          0 = /dev/ttyUSB0 First USB serial converter
2622          1 = /dev/ttyUSB1 Second USB serial converter
2623            ...
2624
2625189 char USB serial converters - alternate devices
2626          0 = /dev/cuusb0 Callout device for ttyUSB0
2627          1 = /dev/cuusb1 Callout device for ttyUSB1
2628            ...
2629
2630190 char Kansas City tracker/tuner card
2631          0 = /dev/kctt0 First KCT/T card
2632          1 = /dev/kctt1 Second KCT/T card
2633            ...
2634
2635191 char Reserved for PCMCIA
2636
2637192 char Kernel profiling interface
2638          0 = /dev/profile Profiling control device
2639          1 = /dev/profile0 Profiling device for CPU 0
2640          2 = /dev/profile1 Profiling device for CPU 1
2641            ...
2642
2643193 char Kernel event-tracing interface
2644          0 = /dev/trace Tracing control device
2645          1 = /dev/trace0 Tracing device for CPU 0
2646          2 = /dev/trace1 Tracing device for CPU 1
2647            ...
2648
2649194 char linVideoStreams (LINVS)
2650          0 = /dev/mvideo/status0 Video compression status
2651          1 = /dev/mvideo/stream0 Video stream
2652          2 = /dev/mvideo/frame0 Single compressed frame
2653          3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2654          4 = /dev/mvideo/codec0 Direct codec access
2655          5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2656
2657         16 = /dev/mvideo/status1 Second device
2658            ...
2659         32 = /dev/mvideo/status2 Third device
2660            ...
2661            ...
2662        240 = /dev/mvideo/status15 16th device
2663            ...
2664
2665195 char Nvidia graphics devices
2666          0 = /dev/nvidia0 First Nvidia card
2667          1 = /dev/nvidia1 Second Nvidia card
2668            ...
2669        255 = /dev/nvidiactl Nvidia card control device
2670
2671196 char Tormenta T1 card
2672          0 = /dev/tor/0 Master control channel for all cards
2673          1 = /dev/tor/1 First DS0
2674          2 = /dev/tor/2 Second DS0
2675            ...
2676         48 = /dev/tor/48 48th DS0
2677         49 = /dev/tor/49 First pseudo-channel
2678         50 = /dev/tor/50 Second pseudo-channel
2679            ...
2680
2681197 char OpenTNF tracing facility
2682          0 = /dev/tnf/t0 Trace 0 data extraction
2683          1 = /dev/tnf/t1 Trace 1 data extraction
2684            ...
2685        128 = /dev/tnf/status Tracing facility status
2686        130 = /dev/tnf/trace Tracing device
2687
2688198 char Total Impact TPMP2 quad coprocessor PCI card
2689          0 = /dev/tpmp2/0 First card
2690          1 = /dev/tpmp2/1 Second card
2691            ...
2692
2693199 char Veritas volume manager (VxVM) volumes
2694          0 = /dev/vx/rdsk/*/* First volume
2695          1 = /dev/vx/rdsk/*/* Second volume
2696            ...
2697
2698199 block Veritas volume manager (VxVM) volumes
2699          0 = /dev/vx/dsk/*/* First volume
2700          1 = /dev/vx/dsk/*/* Second volume
2701            ...
2702
2703        The namespace in these directories is maintained by
2704        the user space VxVM software.
2705
2706200 char Veritas VxVM configuration interface
2707                  0 = /dev/vx/config Configuration access node
2708                  1 = /dev/vx/trace Volume i/o trace access node
2709                  2 = /dev/vx/iod Volume i/o daemon access node
2710                  3 = /dev/vx/info Volume information access node
2711                  4 = /dev/vx/task Volume tasks access node
2712                  5 = /dev/vx/taskmon Volume tasks monitor daemon
2713
2714201 char Veritas VxVM dynamic multipathing driver
2715          0 = /dev/vx/rdmp/* First multipath device
2716          1 = /dev/vx/rdmp/* Second multipath device
2717            ...
2718201 block Veritas VxVM dynamic multipathing driver
2719          0 = /dev/vx/dmp/* First multipath device
2720          1 = /dev/vx/dmp/* Second multipath device
2721            ...
2722
2723        The namespace in these directories is maintained by
2724        the user space VxVM software.
2725
2726202 char CPU model-specific registers
2727          0 = /dev/cpu/0/msr MSRs on CPU 0
2728          1 = /dev/cpu/1/msr MSRs on CPU 1
2729            ...
2730
2731202 block Xen Virtual Block Device
2732          0 = /dev/xvda First Xen VBD whole disk
2733          16 = /dev/xvdb Second Xen VBD whole disk
2734          32 = /dev/xvdc Third Xen VBD whole disk
2735            ...
2736          240 = /dev/xvdp Sixteenth Xen VBD whole disk
2737
2738                Partitions are handled in the same way as for IDE
2739                disks (see major number 3) except that the limit on
2740                partitions is 15.
2741
2742203 char CPU CPUID information
2743          0 = /dev/cpu/0/cpuid CPUID on CPU 0
2744          1 = /dev/cpu/1/cpuid CPUID on CPU 1
2745            ...
2746
2747204 char Low-density serial ports
2748          0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2749          1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2750          2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2751          3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2752          4 = /dev/ttyFB0 Intel Footbridge (ARM)
2753          5 = /dev/ttySA0 StrongARM builtin serial port 0
2754          6 = /dev/ttySA1 StrongARM builtin serial port 1
2755          7 = /dev/ttySA2 StrongARM builtin serial port 2
2756          8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2757          9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2758         10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2759         11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2760         12 = /dev/ttyFW0 Firmware console - port 0
2761         13 = /dev/ttyFW1 Firmware console - port 1
2762         14 = /dev/ttyFW2 Firmware console - port 2
2763         15 = /dev/ttyFW3 Firmware console - port 3
2764         16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2765            ...
2766         31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2767         32 = /dev/ttyDB0 DataBooster serial port 0
2768            ...
2769         39 = /dev/ttyDB7 DataBooster serial port 7
2770         40 = /dev/ttySG0 SGI Altix console port
2771         41 = /dev/ttySMX0 Motorola i.MX - port 0
2772         42 = /dev/ttySMX1 Motorola i.MX - port 1
2773         43 = /dev/ttySMX2 Motorola i.MX - port 2
2774         44 = /dev/ttyMM0 Marvell MPSC - port 0
2775         45 = /dev/ttyMM1 Marvell MPSC - port 1
2776         46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2777            ...
2778         47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2779         50 = /dev/ttyIOC0 Altix serial card
2780            ...
2781         81 = /dev/ttyIOC31 Altix serial card
2782         82 = /dev/ttyVR0 NEC VR4100 series SIU
2783         83 = /dev/ttyVR1 NEC VR4100 series DSIU
2784         84 = /dev/ttyIOC84 Altix ioc4 serial card
2785            ...
2786         115 = /dev/ttyIOC115 Altix ioc4 serial card
2787         116 = /dev/ttySIOC0 Altix ioc3 serial card
2788            ...
2789         147 = /dev/ttySIOC31 Altix ioc3 serial card
2790         148 = /dev/ttyPSC0 PPC PSC - port 0
2791            ...
2792         153 = /dev/ttyPSC5 PPC PSC - port 5
2793         154 = /dev/ttyAT0 ATMEL serial port 0
2794            ...
2795         169 = /dev/ttyAT15 ATMEL serial port 15
2796         170 = /dev/ttyNX0 Hilscher netX serial port 0
2797            ...
2798         185 = /dev/ttyNX15 Hilscher netX serial port 15
2799         186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2800         187 = /dev/ttyUL0 Xilinx uartlite - port 0
2801            ...
2802         190 = /dev/ttyUL3 Xilinx uartlite - port 3
2803         191 = /dev/xvc0 Xen virtual console - port 0
2804         192 = /dev/ttyPZ0 pmac_zilog - port 0
2805            ...
2806         195 = /dev/ttyPZ3 pmac_zilog - port 3
2807         196 = /dev/ttyTX0 TX39/49 serial port 0
2808            ...
2809         204 = /dev/ttyTX7 TX39/49 serial port 7
2810         205 = /dev/ttySC0 SC26xx serial port 0
2811         206 = /dev/ttySC1 SC26xx serial port 1
2812         207 = /dev/ttySC2 SC26xx serial port 2
2813         208 = /dev/ttySC3 SC26xx serial port 3
2814         209 = /dev/ttyMAX0 MAX3100 serial port 0
2815         210 = /dev/ttyMAX1 MAX3100 serial port 1
2816         211 = /dev/ttyMAX2 MAX3100 serial port 2
2817         212 = /dev/ttyMAX3 MAX3100 serial port 3
2818
2819205 char Low-density serial ports (alternate device)
2820          0 = /dev/culu0 Callout device for ttyLU0
2821          1 = /dev/culu1 Callout device for ttyLU1
2822          2 = /dev/culu2 Callout device for ttyLU2
2823          3 = /dev/culu3 Callout device for ttyLU3
2824          4 = /dev/cufb0 Callout device for ttyFB0
2825          5 = /dev/cusa0 Callout device for ttySA0
2826          6 = /dev/cusa1 Callout device for ttySA1
2827          7 = /dev/cusa2 Callout device for ttySA2
2828          8 = /dev/cusc0 Callout device for ttySC0
2829          9 = /dev/cusc1 Callout device for ttySC1
2830         10 = /dev/cusc2 Callout device for ttySC2
2831         11 = /dev/cusc3 Callout device for ttySC3
2832         12 = /dev/cufw0 Callout device for ttyFW0
2833         13 = /dev/cufw1 Callout device for ttyFW1
2834         14 = /dev/cufw2 Callout device for ttyFW2
2835         15 = /dev/cufw3 Callout device for ttyFW3
2836         16 = /dev/cuam0 Callout device for ttyAM0
2837            ...
2838         31 = /dev/cuam15 Callout device for ttyAM15
2839         32 = /dev/cudb0 Callout device for ttyDB0
2840            ...
2841         39 = /dev/cudb7 Callout device for ttyDB7
2842         40 = /dev/cusg0 Callout device for ttySG0
2843         41 = /dev/ttycusmx0 Callout device for ttySMX0
2844         42 = /dev/ttycusmx1 Callout device for ttySMX1
2845         43 = /dev/ttycusmx2 Callout device for ttySMX2
2846         46 = /dev/cucpm0 Callout device for ttyCPM0
2847            ...
2848         49 = /dev/cucpm5 Callout device for ttyCPM5
2849         50 = /dev/cuioc40 Callout device for ttyIOC40
2850            ...
2851         81 = /dev/cuioc431 Callout device for ttyIOC431
2852         82 = /dev/cuvr0 Callout device for ttyVR0
2853         83 = /dev/cuvr1 Callout device for ttyVR1
2854
2855206 char OnStream SC-x0 tape devices
2856          0 = /dev/osst0 First OnStream SCSI tape, mode 0
2857          1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2858            ...
2859         32 = /dev/osst0l First OnStream SCSI tape, mode 1
2860         33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2861            ...
2862         64 = /dev/osst0m First OnStream SCSI tape, mode 2
2863         65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2864            ...
2865         96 = /dev/osst0a First OnStream SCSI tape, mode 3
2866         97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2867            ...
2868        128 = /dev/nosst0 No rewind version of /dev/osst0
2869        129 = /dev/nosst1 No rewind version of /dev/osst1
2870            ...
2871        160 = /dev/nosst0l No rewind version of /dev/osst0l
2872        161 = /dev/nosst1l No rewind version of /dev/osst1l
2873            ...
2874        192 = /dev/nosst0m No rewind version of /dev/osst0m
2875        193 = /dev/nosst1m No rewind version of /dev/osst1m
2876            ...
2877        224 = /dev/nosst0a No rewind version of /dev/osst0a
2878        225 = /dev/nosst1a No rewind version of /dev/osst1a
2879            ...
2880
2881        The OnStream SC-x0 SCSI tapes do not support the
2882        standard SCSI SASD command set and therefore need
2883        their own driver "osst". Note that the IDE, USB (and
2884        maybe ParPort) versions may be driven via ide-scsi or
2885        usb-storage SCSI emulation and this osst device and
2886        driver as well. The ADR-x0 drives are QIC-157
2887        compliant and don't need osst.
2888
2889207 char Compaq ProLiant health feature indicate
2890          0 = /dev/cpqhealth/cpqw Redirector interface
2891          1 = /dev/cpqhealth/crom EISA CROM
2892          2 = /dev/cpqhealth/cdt Data Table
2893          3 = /dev/cpqhealth/cevt Event Log
2894          4 = /dev/cpqhealth/casr Automatic Server Recovery
2895          5 = /dev/cpqhealth/cecc ECC Memory
2896          6 = /dev/cpqhealth/cmca Machine Check Architecture
2897          7 = /dev/cpqhealth/ccsm Deprecated CDT
2898          8 = /dev/cpqhealth/cnmi NMI Handling
2899          9 = /dev/cpqhealth/css Sideshow Management
2900         10 = /dev/cpqhealth/cram CMOS interface
2901         11 = /dev/cpqhealth/cpci PCI IRQ interface
2902
2903208 char User space serial ports
2904          0 = /dev/ttyU0 First user space serial port
2905          1 = /dev/ttyU1 Second user space serial port
2906            ...
2907
2908209 char User space serial ports (alternate devices)
2909          0 = /dev/cuu0 Callout device for ttyU0
2910          1 = /dev/cuu1 Callout device for ttyU1
2911            ...
2912
2913210 char SBE, Inc. sync/async serial card
2914          0 = /dev/sbei/wxcfg0 Configuration device for board 0
2915          1 = /dev/sbei/dld0 Download device for board 0
2916          2 = /dev/sbei/wan00 WAN device, port 0, board 0
2917          3 = /dev/sbei/wan01 WAN device, port 1, board 0
2918          4 = /dev/sbei/wan02 WAN device, port 2, board 0
2919          5 = /dev/sbei/wan03 WAN device, port 3, board 0
2920          6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2921          7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2922          8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2923          9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2924         10 = /dev/sbei/wxcfg1 Configuration device for board 1
2925         11 = /dev/sbei/dld1 Download device for board 1
2926         12 = /dev/sbei/wan10 WAN device, port 0, board 1
2927         13 = /dev/sbei/wan11 WAN device, port 1, board 1
2928         14 = /dev/sbei/wan12 WAN device, port 2, board 1
2929         15 = /dev/sbei/wan13 WAN device, port 3, board 1
2930         16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2931         17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2932         18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2933         19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2934            ...
2935
2936        Yes, each board is really spaced 10 (decimal) apart.
2937
2938211 char Addinum CPCI1500 digital I/O card
2939          0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2940          1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2941            ...
2942
2943212 char LinuxTV.org DVB driver subsystem
2944          0 = /dev/dvb/adapter0/video0 first video decoder of first card
2945          1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2946          2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2947          3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2948          4 = /dev/dvb/adapter0/demux0 first demux device of first card
2949          5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2950          6 = /dev/dvb/adapter0/ca0 first common access port of first card
2951          7 = /dev/dvb/adapter0/net0 first network device of first card
2952          8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2953          9 = /dev/dvb/adapter0/video1 second video decoder of first card
2954            ...
2955         64 = /dev/dvb/adapter1/video0 first video decoder of second card
2956            ...
2957        128 = /dev/dvb/adapter2/video0 first video decoder of third card
2958            ...
2959        196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2960
2961216 char Bluetooth RFCOMM TTY devices
2962          0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2963          1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2964            ...
2965
2966217 char Bluetooth RFCOMM TTY devices (alternate devices)
2967          0 = /dev/curf0 Callout device for rfcomm0
2968          1 = /dev/curf1 Callout device for rfcomm1
2969            ...
2970
2971218 char The Logical Company bus Unibus/Qbus adapters
2972          0 = /dev/logicalco/bci/0 First bus adapter
2973          1 = /dev/logicalco/bci/1 First bus adapter
2974            ...
2975
2976219 char The Logical Company DCI-1300 digital I/O card
2977          0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2978          1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2979            ...
2980
2981220 char Myricom Myrinet "GM" board
2982          0 = /dev/myricom/gm0 First Myrinet GM board
2983          1 = /dev/myricom/gmp0 First board "root access"
2984          2 = /dev/myricom/gm1 Second Myrinet GM board
2985          3 = /dev/myricom/gmp1 Second board "root access"
2986            ...
2987
2988221 char VME bus
2989          0 = /dev/bus/vme/m0 First master image
2990          1 = /dev/bus/vme/m1 Second master image
2991          2 = /dev/bus/vme/m2 Third master image
2992          3 = /dev/bus/vme/m3 Fourth master image
2993          4 = /dev/bus/vme/s0 First slave image
2994          5 = /dev/bus/vme/s1 Second slave image
2995          6 = /dev/bus/vme/s2 Third slave image
2996          7 = /dev/bus/vme/s3 Fourth slave image
2997          8 = /dev/bus/vme/ctl Control
2998
2999        It is expected that all VME bus drivers will use the
3000        same interface. For interface documentation see
3001        http://www.vmelinux.org/.
3002
3003224 char A2232 serial card
3004          0 = /dev/ttyY0 First A2232 port
3005          1 = /dev/ttyY1 Second A2232 port
3006            ...
3007
3008225 char A2232 serial card (alternate devices)
3009          0 = /dev/cuy0 Callout device for ttyY0
3010          1 = /dev/cuy1 Callout device for ttyY1
3011            ...
3012
3013226 char Direct Rendering Infrastructure (DRI)
3014          0 = /dev/dri/card0 First graphics card
3015          1 = /dev/dri/card1 Second graphics card
3016            ...
3017
3018227 char IBM 3270 terminal Unix tty access
3019          1 = /dev/3270/tty1 First 3270 terminal
3020          2 = /dev/3270/tty2 Seconds 3270 terminal
3021            ...
3022
3023228 char IBM 3270 terminal block-mode access
3024          0 = /dev/3270/tub Controlling interface
3025          1 = /dev/3270/tub1 First 3270 terminal
3026          2 = /dev/3270/tub2 Second 3270 terminal
3027            ...
3028
3029229 char IBM iSeries/pSeries virtual console
3030          0 = /dev/hvc0 First console port
3031          1 = /dev/hvc1 Second console port
3032            ...
3033
3034230 char IBM iSeries virtual tape
3035          0 = /dev/iseries/vt0 First virtual tape, mode 0
3036          1 = /dev/iseries/vt1 Second virtual tape, mode 0
3037            ...
3038         32 = /dev/iseries/vt0l First virtual tape, mode 1
3039         33 = /dev/iseries/vt1l Second virtual tape, mode 1
3040            ...
3041         64 = /dev/iseries/vt0m First virtual tape, mode 2
3042         65 = /dev/iseries/vt1m Second virtual tape, mode 2
3043            ...
3044         96 = /dev/iseries/vt0a First virtual tape, mode 3
3045         97 = /dev/iseries/vt1a Second virtual tape, mode 3
3046              ...
3047        128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3048        129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3049            ...
3050        160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3051        161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3052            ...
3053        192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3054        193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3055            ...
3056        224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3057        225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3058            ...
3059
3060        "No rewind" refers to the omission of the default
3061        automatic rewind on device close. The MTREW or MTOFFL
3062        ioctl()'s can be used to rewind the tape regardless of
3063        the device used to access it.
3064
3065231 char InfiniBand
3066        0 = /dev/infiniband/umad0
3067        1 = /dev/infiniband/umad1
3068          ...
3069        63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3070        64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3071        65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3072          ...
3073        127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3074        128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3075        129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3076          ...
3077        159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3078
3079232 char Biometric Devices
3080        0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3081        1 = /dev/biometric/sensor0/iris first iris sensor on first device
3082        2 = /dev/biometric/sensor0/retina first retina sensor on first device
3083        3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3084        4 = /dev/biometric/sensor0/facial first facial sensor on first device
3085        5 = /dev/biometric/sensor0/hand first hand sensor on first device
3086          ...
3087        10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3088          ...
3089        20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3090          ...
3091
3092233 char PathScale InfiniPath interconnect
3093        0 = /dev/ipath Primary device for programs (any unit)
3094        1 = /dev/ipath0 Access specifically to unit 0
3095        2 = /dev/ipath1 Access specifically to unit 1
3096          ...
3097        4 = /dev/ipath3 Access specifically to unit 3
3098        129 = /dev/ipath_sma Device used by Subnet Management Agent
3099        130 = /dev/ipath_diag Device used by diagnostics programs
3100
3101234-239 UNASSIGNED
3102
3103240-254 char LOCAL/EXPERIMENTAL USE
3104
3105240-254 block LOCAL/EXPERIMENTAL USE
3106        Allocated for local/experimental use. For devices not
3107        assigned official numbers, these ranges should be
3108        used in order to avoid conflicting with future assignments.
3109
3110255 char RESERVED
3111
3112255 block RESERVED
3113
3114        This major is reserved to assist the expansion to a
3115        larger number space. No device nodes with this major
3116        should ever be created on the filesystem.
3117        (This is probably not true anymore, but I'll leave it
3118        for now /Torben)
3119
3120---LARGE MAJORS!!!!!---
3121
3122256 char Equinox SST multi-port serial boards
3123           0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3124         127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3125         128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3126          ...
3127        1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3128
3129256 block Resident Flash Disk Flash Translation Layer
3130          0 = /dev/rfda First RFD FTL layer
3131         16 = /dev/rfdb Second RFD FTL layer
3132          ...
3133        240 = /dev/rfdp 16th RFD FTL layer
3134
3135257 char Phoenix Technologies Cryptographic Services Driver
3136          0 = /dev/ptlsec Crypto Services Driver
3137
3138257 block SSFDC Flash Translation Layer filesystem
3139          0 = /dev/ssfdca First SSFDC layer
3140          8 = /dev/ssfdcb Second SSFDC layer
3141         16 = /dev/ssfdcc Third SSFDC layer
3142         24 = /dev/ssfdcd 4th SSFDC layer
3143         32 = /dev/ssfdce 5th SSFDC layer
3144         40 = /dev/ssfdcf 6th SSFDC layer
3145         48 = /dev/ssfdcg 7th SSFDC layer
3146         56 = /dev/ssfdch 8th SSFDC layer
3147
3148258 block ROM/Flash read-only translation layer
3149          0 = /dev/blockrom0 First ROM card's translation layer interface
3150          1 = /dev/blockrom1 Second ROM card's translation layer interface
3151          ...
3152
3153259 block Block Extended Major
3154          Used dynamically to hold additional partition minor
3155          numbers and allow large numbers of partitions per device
3156
3157259 char FPGA configuration interfaces
3158          0 = /dev/icap0 First Xilinx internal configuration
3159          1 = /dev/icap1 Second Xilinx internal configuration
3160
3161260 char OSD (Object-based-device) SCSI Device
3162          0 = /dev/osd0 First OSD Device
3163          1 = /dev/osd1 Second OSD Device
3164          ...
3165          255 = /dev/osd255 256th OSD Device
3166
3167 **** ADDITIONAL /dev DIRECTORY ENTRIES
3168
3169This section details additional entries that should or may exist in
3170the /dev directory. It is preferred that symbolic links use the same
3171form (absolute or relative) as is indicated here. Links are
3172classified as "hard" or "symbolic" depending on the preferred type of
3173link; if possible, the indicated type of link should be used.
3174
3175
3176    Compulsory links
3177
3178These links should exist on all systems:
3179
3180/dev/fd /proc/self/fd symbolic File descriptors
3181/dev/stdin fd/0 symbolic stdin file descriptor
3182/dev/stdout fd/1 symbolic stdout file descriptor
3183/dev/stderr fd/2 symbolic stderr file descriptor
3184/dev/nfsd socksys symbolic Required by iBCS-2
3185/dev/X0R null symbolic Required by iBCS-2
3186
3187Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3188
3189    Recommended links
3190
3191It is recommended that these links exist on all systems:
3192
3193/dev/core /proc/kcore symbolic Backward compatibility
3194/dev/ramdisk ram0 symbolic Backward compatibility
3195/dev/ftape qft0 symbolic Backward compatibility
3196/dev/bttv0 video0 symbolic Backward compatibility
3197/dev/radio radio0 symbolic Backward compatibility
3198/dev/i2o* /dev/i2o/* symbolic Backward compatibility
3199/dev/scd? sr? hard Alternate SCSI CD-ROM name
3200
3201    Locally defined links
3202
3203The following links may be established locally to conform to the
3204configuration of the system. This is merely a tabulation of existing
3205practice, and does not constitute a recommendation. However, if they
3206exist, they should have the following uses.
3207
3208/dev/mouse mouse port symbolic Current mouse device
3209/dev/tape tape device symbolic Current tape device
3210/dev/cdrom CD-ROM device symbolic Current CD-ROM device
3211/dev/cdwriter CD-writer symbolic Current CD-writer device
3212/dev/scanner scanner symbolic Current scanner device
3213/dev/modem modem port symbolic Current dialout device
3214/dev/root root device symbolic Current root filesystem
3215/dev/swap swap device symbolic Current swap device
3216
3217/dev/modem should not be used for a modem which supports dialin as
3218well as dialout, as it tends to cause lock file problems. If it
3219exists, /dev/modem should point to the appropriate primary TTY device
3220(the use of the alternate callout devices is deprecated).
3221
3222For SCSI devices, /dev/tape and /dev/cdrom should point to the
3223``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3224/dev/cdwriter and /dev/scanner should point to the appropriate generic
3225SCSI devices (/dev/sg*).
3226
3227/dev/mouse may point to a primary serial TTY device, a hardware mouse
3228device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3229
3230    Sockets and pipes
3231
3232Non-transient sockets and named pipes may exist in /dev. Common entries are:
3233
3234/dev/printer socket lpd local socket
3235/dev/log socket syslog local socket
3236/dev/gpmdata socket gpm mouse multiplexer
3237
3238    Mount points
3239
3240The following names are reserved for mounting special filesystems
3241under /dev. These special filesystems provide kernel interfaces that
3242cannot be provided with standard device nodes.
3243
3244/dev/pts devpts PTY slave filesystem
3245/dev/shm tmpfs POSIX shared memory maintenance access
3246
3247 **** TERMINAL DEVICES
3248
3249Terminal, or TTY devices are a special class of character devices. A
3250terminal device is any device that could act as a controlling terminal
3251for a session; this includes virtual consoles, serial ports, and
3252pseudoterminals (PTYs).
3253
3254All terminal devices share a common set of capabilities known as line
3255disciplines; these include the common terminal line discipline as well
3256as SLIP and PPP modes.
3257
3258All terminal devices are named similarly; this section explains the
3259naming and use of the various types of TTYs. Note that the naming
3260conventions include several historical warts; some of these are
3261Linux-specific, some were inherited from other systems, and some
3262reflect Linux outgrowing a borrowed convention.
3263
3264A hash mark (#) in a device name is used here to indicate a decimal
3265number without leading zeroes.
3266
3267    Virtual consoles and the console device
3268
3269Virtual consoles are full-screen terminal displays on the system video
3270monitor. Virtual consoles are named /dev/tty#, with numbering
3271starting at /dev/tty1; /dev/tty0 is the current virtual console.
3272/dev/tty0 is the device that should be used to access the system video
3273card on those architectures for which the frame buffer devices
3274(/dev/fb*) are not applicable. Do not use /dev/console
3275for this purpose.
3276
3277The console device, /dev/console, is the device to which system
3278messages should be sent, and on which logins should be permitted in
3279single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3280by the kernel; for previous versions it should be a symbolic link to
3281either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3282a serial port primary (tty*, not cu*) device, depending on the
3283configuration of the system.
3284
3285    Serial ports
3286
3287Serial ports are RS-232 serial ports and any device which simulates
3288one, either in hardware (such as internal modems) or in software (such
3289as the ISDN driver.) Under Linux, each serial ports has two device
3290names, the primary or callin device and the alternate or callout one.
3291Each kind of device is indicated by a different letter. For any
3292letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3293respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3294correspond to /dev/cua# and /dev/cub#. In the future, it should be
3295expected that multiple letters will be used; all letters will be upper
3296case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3297"cu" device (e.g. /dev/cudp#).
3298
3299The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3300
3301The alternate devices provide for kernel-based exclusion and somewhat
3302different defaults than the primary devices. Their main purpose is to
3303allow the use of serial ports with programs with no inherent or broken
3304support for serial ports. Their use is deprecated, and they may be
3305removed from a future version of Linux.
3306
3307Arbitration of serial ports is provided by the use of lock files with
3308the names /var/lock/LCK..ttyX#. The contents of the lock file should
3309be the PID of the locking process as an ASCII number.
3310
3311It is common practice to install links such as /dev/modem
3312which point to serial ports. In order to ensure proper locking in the
3313presence of these links, it is recommended that software chase
3314symlinks and lock all possible names; additionally, it is recommended
3315that a lock file be installed with the corresponding alternate
3316device. In order to avoid deadlocks, it is recommended that the locks
3317are acquired in the following order, and released in the reverse:
3318
3319    1. The symbolic link name, if any (/var/lock/LCK..modem)
3320    2. The "tty" name (/var/lock/LCK..ttyS2)
3321    3. The alternate device name (/var/lock/LCK..cua2)
3322
3323In the case of nested symbolic links, the lock files should be
3324installed in the order the symlinks are resolved.
3325
3326Under no circumstances should an application hold a lock while waiting
3327for another to be released. In addition, applications which attempt
3328to create lock files for the corresponding alternate device names
3329should take into account the possibility of being used on a non-serial
3330port TTY, for which no alternate device would exist.
3331
3332    Pseudoterminals (PTYs)
3333
3334Pseudoterminals, or PTYs, are used to create login sessions or provide
3335other capabilities requiring a TTY line discipline (including SLIP or
3336PPP capability) to arbitrary data-generation processes. Each PTY has
3337a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3338/dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3339allowing each master side to be opened only once.
3340
3341Once the master side has been opened, the corresponding slave device
3342can be used in the same manner as any TTY device. The master and
3343slave devices are connected by the kernel, generating the equivalent
3344of a bidirectional pipe with TTY capabilities.
3345
3346Recent versions of the Linux kernels and GNU libc contain support for
3347the System V/Unix98 naming scheme for PTYs, which assigns a common
3348device, /dev/ptmx, to all the masters (opening it will automatically
3349give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3350for the slaves; the slaves are named with decimal integers (/dev/pts/#
3351in our notation). This removes the problem of exhausting the
3352namespace and enables the kernel to automatically create the device
3353nodes for the slaves on demand using the "devpts" filesystem.
3354
3355

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