Root/Documentation/devices.txt

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17The LaTeX version of this document is no longer maintained.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26The symbol {2.6} means the allocation is obsolete and scheduled for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        240-254 Reserved for local use
451        255 Reserved for MISC_DYNAMIC_MINOR
452
453 11 char Raw keyboard device (Linux/SPARC only)
454          0 = /dev/kbd Raw keyboard device
455
456 11 char Serial Mux device (Linux/PA-RISC only)
457          0 = /dev/ttyB0 First mux port
458          1 = /dev/ttyB1 Second mux port
459            ...
460
461 11 block SCSI CD-ROM devices
462          0 = /dev/scd0 First SCSI CD-ROM
463          1 = /dev/scd1 Second SCSI CD-ROM
464            ...
465
466        The prefix /dev/sr (instead of /dev/scd) has been deprecated.
467
468 12 char QIC-02 tape
469          2 = /dev/ntpqic11 QIC-11, no rewind-on-close
470          3 = /dev/tpqic11 QIC-11, rewind-on-close
471          4 = /dev/ntpqic24 QIC-24, no rewind-on-close
472          5 = /dev/tpqic24 QIC-24, rewind-on-close
473          6 = /dev/ntpqic120 QIC-120, no rewind-on-close
474          7 = /dev/tpqic120 QIC-120, rewind-on-close
475          8 = /dev/ntpqic150 QIC-150, no rewind-on-close
476          9 = /dev/tpqic150 QIC-150, rewind-on-close
477
478        The device names specified are proposed -- if there
479        are "standard" names for these devices, please let me know.
480
481 12 block
482
483 13 char Input core
484          0 = /dev/input/js0 First joystick
485          1 = /dev/input/js1 Second joystick
486            ...
487         32 = /dev/input/mouse0 First mouse
488         33 = /dev/input/mouse1 Second mouse
489            ...
490         63 = /dev/input/mice Unified mouse
491         64 = /dev/input/event0 First event queue
492         65 = /dev/input/event1 Second event queue
493            ...
494
495        Each device type has 5 bits (32 minors).
496
497 13 block 8-bit MFM/RLL/IDE controller
498          0 = /dev/xda First XT disk whole disk
499         64 = /dev/xdb Second XT disk whole disk
500
501        Partitions are handled in the same way as IDE disks
502        (see major number 3).
503
504 14 char Open Sound System (OSS)
505          0 = /dev/mixer Mixer control
506          1 = /dev/sequencer Audio sequencer
507          2 = /dev/midi00 First MIDI port
508          3 = /dev/dsp Digital audio
509          4 = /dev/audio Sun-compatible digital audio
510          6 =
511          7 = /dev/audioctl SPARC audio control device
512          8 = /dev/sequencer2 Sequencer -- alternate device
513         16 = /dev/mixer1 Second soundcard mixer control
514         17 = /dev/patmgr0 Sequencer patch manager
515         18 = /dev/midi01 Second MIDI port
516         19 = /dev/dsp1 Second soundcard digital audio
517         20 = /dev/audio1 Second soundcard Sun digital audio
518         33 = /dev/patmgr1 Sequencer patch manager
519         34 = /dev/midi02 Third MIDI port
520         50 = /dev/midi03 Fourth MIDI port
521
522 14 block
523
524 15 char Joystick
525          0 = /dev/js0 First analog joystick
526          1 = /dev/js1 Second analog joystick
527            ...
528        128 = /dev/djs0 First digital joystick
529        129 = /dev/djs1 Second digital joystick
530            ...
531 15 block Sony CDU-31A/CDU-33A CD-ROM
532          0 = /dev/sonycd Sony CDU-31a CD-ROM
533
534 16 char Non-SCSI scanners
535          0 = /dev/gs4500 Genius 4500 handheld scanner
536
537 16 block GoldStar CD-ROM
538          0 = /dev/gscd GoldStar CD-ROM
539
540 17 char OBSOLETE (was Chase serial card)
541          0 = /dev/ttyH0 First Chase port
542          1 = /dev/ttyH1 Second Chase port
543            ...
544 17 block Optics Storage CD-ROM
545          0 = /dev/optcd Optics Storage CD-ROM
546
547 18 char OBSOLETE (was Chase serial card - alternate devices)
548          0 = /dev/cuh0 Callout device for ttyH0
549          1 = /dev/cuh1 Callout device for ttyH1
550            ...
551 18 block Sanyo CD-ROM
552          0 = /dev/sjcd Sanyo CD-ROM
553
554 19 char Cyclades serial card
555          0 = /dev/ttyC0 First Cyclades port
556            ...
557         31 = /dev/ttyC31 32nd Cyclades port
558
559 19 block "Double" compressed disk
560          0 = /dev/double0 First compressed disk
561            ...
562          7 = /dev/double7 Eighth compressed disk
563        128 = /dev/cdouble0 Mirror of first compressed disk
564            ...
565        135 = /dev/cdouble7 Mirror of eighth compressed disk
566
567        See the Double documentation for the meaning of the
568        mirror devices.
569
570 20 char Cyclades serial card - alternate devices
571          0 = /dev/cub0 Callout device for ttyC0
572            ...
573         31 = /dev/cub31 Callout device for ttyC31
574
575 20 block Hitachi CD-ROM (under development)
576          0 = /dev/hitcd Hitachi CD-ROM
577
578 21 char Generic SCSI access
579          0 = /dev/sg0 First generic SCSI device
580          1 = /dev/sg1 Second generic SCSI device
581            ...
582
583        Most distributions name these /dev/sga, /dev/sgb...;
584        this sets an unnecessary limit of 26 SCSI devices in
585        the system and is counter to standard Linux
586        device-naming practice.
587
588 21 block Acorn MFM hard drive interface
589          0 = /dev/mfma First MFM drive whole disk
590         64 = /dev/mfmb Second MFM drive whole disk
591
592        This device is used on the ARM-based Acorn RiscPC.
593        Partitions are handled the same way as for IDE disks
594        (see major number 3).
595
596 22 char Digiboard serial card
597          0 = /dev/ttyD0 First Digiboard port
598          1 = /dev/ttyD1 Second Digiboard port
599            ...
600 22 block Second IDE hard disk/CD-ROM interface
601          0 = /dev/hdc Master: whole disk (or CD-ROM)
602         64 = /dev/hdd Slave: whole disk (or CD-ROM)
603
604        Partitions are handled the same way as for the first
605        interface (see major number 3).
606
607 23 char Digiboard serial card - alternate devices
608          0 = /dev/cud0 Callout device for ttyD0
609          1 = /dev/cud1 Callout device for ttyD1
610              ...
611 23 block Mitsumi proprietary CD-ROM
612          0 = /dev/mcd Mitsumi CD-ROM
613
614 24 char Stallion serial card
615          0 = /dev/ttyE0 Stallion port 0 card 0
616          1 = /dev/ttyE1 Stallion port 1 card 0
617            ...
618         64 = /dev/ttyE64 Stallion port 0 card 1
619         65 = /dev/ttyE65 Stallion port 1 card 1
620              ...
621        128 = /dev/ttyE128 Stallion port 0 card 2
622        129 = /dev/ttyE129 Stallion port 1 card 2
623            ...
624        192 = /dev/ttyE192 Stallion port 0 card 3
625        193 = /dev/ttyE193 Stallion port 1 card 3
626            ...
627 24 block Sony CDU-535 CD-ROM
628          0 = /dev/cdu535 Sony CDU-535 CD-ROM
629
630 25 char Stallion serial card - alternate devices
631          0 = /dev/cue0 Callout device for ttyE0
632          1 = /dev/cue1 Callout device for ttyE1
633            ...
634         64 = /dev/cue64 Callout device for ttyE64
635         65 = /dev/cue65 Callout device for ttyE65
636            ...
637        128 = /dev/cue128 Callout device for ttyE128
638        129 = /dev/cue129 Callout device for ttyE129
639            ...
640        192 = /dev/cue192 Callout device for ttyE192
641        193 = /dev/cue193 Callout device for ttyE193
642              ...
643 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
644          0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
645          1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
646          2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
647          3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
648
649 26 char
650
651 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
652          0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
653          1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
654          2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
655          3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
656
657 27 char QIC-117 tape
658          0 = /dev/qft0 Unit 0, rewind-on-close
659          1 = /dev/qft1 Unit 1, rewind-on-close
660          2 = /dev/qft2 Unit 2, rewind-on-close
661          3 = /dev/qft3 Unit 3, rewind-on-close
662          4 = /dev/nqft0 Unit 0, no rewind-on-close
663          5 = /dev/nqft1 Unit 1, no rewind-on-close
664          6 = /dev/nqft2 Unit 2, no rewind-on-close
665          7 = /dev/nqft3 Unit 3, no rewind-on-close
666         16 = /dev/zqft0 Unit 0, rewind-on-close, compression
667         17 = /dev/zqft1 Unit 1, rewind-on-close, compression
668         18 = /dev/zqft2 Unit 2, rewind-on-close, compression
669         19 = /dev/zqft3 Unit 3, rewind-on-close, compression
670         20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
671         21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
672         22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
673         23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
674         32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
675         33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
676         34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
677         35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
678         36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
679         37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
680         38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
681         39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
682
683 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
684          0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
685          1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
686          2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
687          3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
688
689 28 char Stallion serial card - card programming
690          0 = /dev/staliomem0 First Stallion card I/O memory
691          1 = /dev/staliomem1 Second Stallion card I/O memory
692          2 = /dev/staliomem2 Third Stallion card I/O memory
693          3 = /dev/staliomem3 Fourth Stallion card I/O memory
694
695 28 char Atari SLM ACSI laser printer (68k/Atari)
696          0 = /dev/slm0 First SLM laser printer
697          1 = /dev/slm1 Second SLM laser printer
698            ...
699 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
700          0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
701          1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
702          2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
703          3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
704
705 28 block ACSI disk (68k/Atari)
706          0 = /dev/ada First ACSI disk whole disk
707         16 = /dev/adb Second ACSI disk whole disk
708         32 = /dev/adc Third ACSI disk whole disk
709            ...
710        240 = /dev/adp 16th ACSI disk whole disk
711
712        Partitions are handled in the same way as for IDE
713        disks (see major number 3) except that the limit on
714        partitions is 15, like SCSI.
715
716 29 char Universal frame buffer
717          0 = /dev/fb0 First frame buffer
718          1 = /dev/fb1 Second frame buffer
719            ...
720         31 = /dev/fb31 32nd frame buffer
721
722 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
723          0 = /dev/aztcd Aztech CD-ROM
724
725 30 char iBCS-2 compatibility devices
726          0 = /dev/socksys Socket access
727          1 = /dev/spx SVR3 local X interface
728         32 = /dev/inet/ip Network access
729         33 = /dev/inet/icmp
730         34 = /dev/inet/ggp
731         35 = /dev/inet/ipip
732         36 = /dev/inet/tcp
733         37 = /dev/inet/egp
734         38 = /dev/inet/pup
735         39 = /dev/inet/udp
736         40 = /dev/inet/idp
737         41 = /dev/inet/rawip
738
739        Additionally, iBCS-2 requires the following links:
740
741        /dev/ip -> /dev/inet/ip
742        /dev/icmp -> /dev/inet/icmp
743        /dev/ggp -> /dev/inet/ggp
744        /dev/ipip -> /dev/inet/ipip
745        /dev/tcp -> /dev/inet/tcp
746        /dev/egp -> /dev/inet/egp
747        /dev/pup -> /dev/inet/pup
748        /dev/udp -> /dev/inet/udp
749        /dev/idp -> /dev/inet/idp
750        /dev/rawip -> /dev/inet/rawip
751        /dev/inet/arp -> /dev/inet/udp
752        /dev/inet/rip -> /dev/inet/udp
753        /dev/nfsd -> /dev/socksys
754        /dev/X0R -> /dev/null (? apparently not required ?)
755
756 30 block Philips LMS CM-205 CD-ROM
757          0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
758
759        /dev/lmscd is an older name for this device. This
760        driver does not work with the CM-205MS CD-ROM.
761
762 31 char MPU-401 MIDI
763          0 = /dev/mpu401data MPU-401 data port
764          1 = /dev/mpu401stat MPU-401 status port
765
766 31 block ROM/flash memory card
767          0 = /dev/rom0 First ROM card (rw)
768              ...
769          7 = /dev/rom7 Eighth ROM card (rw)
770          8 = /dev/rrom0 First ROM card (ro)
771            ...
772         15 = /dev/rrom7 Eighth ROM card (ro)
773         16 = /dev/flash0 First flash memory card (rw)
774            ...
775         23 = /dev/flash7 Eighth flash memory card (rw)
776         24 = /dev/rflash0 First flash memory card (ro)
777            ...
778         31 = /dev/rflash7 Eighth flash memory card (ro)
779
780        The read-write (rw) devices support back-caching
781        written data in RAM, as well as writing to flash RAM
782        devices. The read-only devices (ro) support reading
783        only.
784
785 32 char Specialix serial card
786          0 = /dev/ttyX0 First Specialix port
787          1 = /dev/ttyX1 Second Specialix port
788            ...
789 32 block Philips LMS CM-206 CD-ROM
790          0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
791
792 33 char Specialix serial card - alternate devices
793          0 = /dev/cux0 Callout device for ttyX0
794          1 = /dev/cux1 Callout device for ttyX1
795            ...
796 33 block Third IDE hard disk/CD-ROM interface
797          0 = /dev/hde Master: whole disk (or CD-ROM)
798         64 = /dev/hdf Slave: whole disk (or CD-ROM)
799
800        Partitions are handled the same way as for the first
801        interface (see major number 3).
802
803 34 char Z8530 HDLC driver
804          0 = /dev/scc0 First Z8530, first port
805          1 = /dev/scc1 First Z8530, second port
806          2 = /dev/scc2 Second Z8530, first port
807          3 = /dev/scc3 Second Z8530, second port
808            ...
809
810        In a previous version these devices were named
811        /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
812        on.
813
814 34 block Fourth IDE hard disk/CD-ROM interface
815          0 = /dev/hdg Master: whole disk (or CD-ROM)
816         64 = /dev/hdh Slave: whole disk (or CD-ROM)
817
818        Partitions are handled the same way as for the first
819        interface (see major number 3).
820
821 35 char tclmidi MIDI driver
822          0 = /dev/midi0 First MIDI port, kernel timed
823          1 = /dev/midi1 Second MIDI port, kernel timed
824          2 = /dev/midi2 Third MIDI port, kernel timed
825          3 = /dev/midi3 Fourth MIDI port, kernel timed
826         64 = /dev/rmidi0 First MIDI port, untimed
827         65 = /dev/rmidi1 Second MIDI port, untimed
828         66 = /dev/rmidi2 Third MIDI port, untimed
829         67 = /dev/rmidi3 Fourth MIDI port, untimed
830        128 = /dev/smpte0 First MIDI port, SMPTE timed
831        129 = /dev/smpte1 Second MIDI port, SMPTE timed
832        130 = /dev/smpte2 Third MIDI port, SMPTE timed
833        131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
834
835 35 block Slow memory ramdisk
836          0 = /dev/slram Slow memory ramdisk
837
838 36 char Netlink support
839          0 = /dev/route Routing, device updates, kernel to user
840          1 = /dev/skip enSKIP security cache control
841          3 = /dev/fwmonitor Firewall packet copies
842         16 = /dev/tap0 First Ethertap device
843            ...
844         31 = /dev/tap15 16th Ethertap device
845
846 36 block MCA ESDI hard disk
847          0 = /dev/eda First ESDI disk whole disk
848         64 = /dev/edb Second ESDI disk whole disk
849            ...
850
851        Partitions are handled in the same way as IDE disks
852        (see major number 3).
853
854 37 char IDE tape
855          0 = /dev/ht0 First IDE tape
856          1 = /dev/ht1 Second IDE tape
857            ...
858        128 = /dev/nht0 First IDE tape, no rewind-on-close
859        129 = /dev/nht1 Second IDE tape, no rewind-on-close
860            ...
861
862        Currently, only one IDE tape drive is supported.
863
864 37 block Zorro II ramdisk
865          0 = /dev/z2ram Zorro II ramdisk
866
867 38 char Myricom PCI Myrinet board
868          0 = /dev/mlanai0 First Myrinet board
869          1 = /dev/mlanai1 Second Myrinet board
870            ...
871
872        This device is used for status query, board control
873        and "user level packet I/O." This board is also
874        accessible as a standard networking "eth" device.
875
876 38 block OBSOLETE (was Linux/AP+)
877
878 39 char ML-16P experimental I/O board
879          0 = /dev/ml16pa-a0 First card, first analog channel
880          1 = /dev/ml16pa-a1 First card, second analog channel
881            ...
882         15 = /dev/ml16pa-a15 First card, 16th analog channel
883         16 = /dev/ml16pa-d First card, digital lines
884         17 = /dev/ml16pa-c0 First card, first counter/timer
885         18 = /dev/ml16pa-c1 First card, second counter/timer
886         19 = /dev/ml16pa-c2 First card, third counter/timer
887         32 = /dev/ml16pb-a0 Second card, first analog channel
888         33 = /dev/ml16pb-a1 Second card, second analog channel
889            ...
890         47 = /dev/ml16pb-a15 Second card, 16th analog channel
891         48 = /dev/ml16pb-d Second card, digital lines
892         49 = /dev/ml16pb-c0 Second card, first counter/timer
893         50 = /dev/ml16pb-c1 Second card, second counter/timer
894         51 = /dev/ml16pb-c2 Second card, third counter/timer
895              ...
896 39 block
897
898 40 char
899
900 40 block
901
902 41 char Yet Another Micro Monitor
903          0 = /dev/yamm Yet Another Micro Monitor
904
905 41 block
906
907 42 char Demo/sample use
908
909 42 block Demo/sample use
910
911        This number is intended for use in sample code, as
912        well as a general "example" device number. It
913        should never be used for a device driver that is being
914        distributed; either obtain an official number or use
915        the local/experimental range. The sudden addition or
916        removal of a driver with this number should not cause
917        ill effects to the system (bugs excepted.)
918
919        IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
920        DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
921
922 43 char isdn4linux virtual modem
923          0 = /dev/ttyI0 First virtual modem
924            ...
925         63 = /dev/ttyI63 64th virtual modem
926
927 43 block Network block devices
928          0 = /dev/nb0 First network block device
929          1 = /dev/nb1 Second network block device
930            ...
931
932        Network Block Device is somehow similar to loopback
933        devices: If you read from it, it sends packet across
934        network asking server for data. If you write to it, it
935        sends packet telling server to write. It could be used
936        to mounting filesystems over the net, swapping over
937        the net, implementing block device in userland etc.
938
939 44 char isdn4linux virtual modem - alternate devices
940          0 = /dev/cui0 Callout device for ttyI0
941            ...
942         63 = /dev/cui63 Callout device for ttyI63
943
944 44 block Flash Translation Layer (FTL) filesystems
945          0 = /dev/ftla FTL on first Memory Technology Device
946         16 = /dev/ftlb FTL on second Memory Technology Device
947         32 = /dev/ftlc FTL on third Memory Technology Device
948            ...
949        240 = /dev/ftlp FTL on 16th Memory Technology Device
950
951        Partitions are handled in the same way as for IDE
952        disks (see major number 3) except that the partition
953        limit is 15 rather than 63 per disk (same as SCSI.)
954
955 45 char isdn4linux ISDN BRI driver
956          0 = /dev/isdn0 First virtual B channel raw data
957            ...
958         63 = /dev/isdn63 64th virtual B channel raw data
959         64 = /dev/isdnctrl0 First channel control/debug
960            ...
961        127 = /dev/isdnctrl63 64th channel control/debug
962
963        128 = /dev/ippp0 First SyncPPP device
964            ...
965        191 = /dev/ippp63 64th SyncPPP device
966
967        255 = /dev/isdninfo ISDN monitor interface
968
969 45 block Parallel port IDE disk devices
970          0 = /dev/pda First parallel port IDE disk
971         16 = /dev/pdb Second parallel port IDE disk
972         32 = /dev/pdc Third parallel port IDE disk
973         48 = /dev/pdd Fourth parallel port IDE disk
974
975        Partitions are handled in the same way as for IDE
976        disks (see major number 3) except that the partition
977        limit is 15 rather than 63 per disk.
978
979 46 char Comtrol Rocketport serial card
980          0 = /dev/ttyR0 First Rocketport port
981          1 = /dev/ttyR1 Second Rocketport port
982            ...
983 46 block Parallel port ATAPI CD-ROM devices
984          0 = /dev/pcd0 First parallel port ATAPI CD-ROM
985          1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
986          2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
987          3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
988
989 47 char Comtrol Rocketport serial card - alternate devices
990          0 = /dev/cur0 Callout device for ttyR0
991          1 = /dev/cur1 Callout device for ttyR1
992            ...
993 47 block Parallel port ATAPI disk devices
994          0 = /dev/pf0 First parallel port ATAPI disk
995          1 = /dev/pf1 Second parallel port ATAPI disk
996          2 = /dev/pf2 Third parallel port ATAPI disk
997          3 = /dev/pf3 Fourth parallel port ATAPI disk
998
999        This driver is intended for floppy disks and similar
1000        devices and hence does not support partitioning.
1001
1002 48 char SDL RISCom serial card
1003          0 = /dev/ttyL0 First RISCom port
1004          1 = /dev/ttyL1 Second RISCom port
1005            ...
1006 48 block Mylex DAC960 PCI RAID controller; first controller
1007          0 = /dev/rd/c0d0 First disk, whole disk
1008          8 = /dev/rd/c0d1 Second disk, whole disk
1009            ...
1010        248 = /dev/rd/c0d31 32nd disk, whole disk
1011
1012        For partitions add:
1013          0 = /dev/rd/c?d? Whole disk
1014          1 = /dev/rd/c?d?p1 First partition
1015            ...
1016          7 = /dev/rd/c?d?p7 Seventh partition
1017
1018 49 char SDL RISCom serial card - alternate devices
1019          0 = /dev/cul0 Callout device for ttyL0
1020          1 = /dev/cul1 Callout device for ttyL1
1021            ...
1022 49 block Mylex DAC960 PCI RAID controller; second controller
1023          0 = /dev/rd/c1d0 First disk, whole disk
1024          8 = /dev/rd/c1d1 Second disk, whole disk
1025            ...
1026        248 = /dev/rd/c1d31 32nd disk, whole disk
1027
1028        Partitions are handled as for major 48.
1029
1030 50 char Reserved for GLINT
1031
1032 50 block Mylex DAC960 PCI RAID controller; third controller
1033          0 = /dev/rd/c2d0 First disk, whole disk
1034          8 = /dev/rd/c2d1 Second disk, whole disk
1035            ...
1036        248 = /dev/rd/c2d31 32nd disk, whole disk
1037
1038 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1039          0 = /dev/bc0 First Baycom radio modem
1040          1 = /dev/bc1 Second Baycom radio modem
1041            ...
1042 51 block Mylex DAC960 PCI RAID controller; fourth controller
1043          0 = /dev/rd/c3d0 First disk, whole disk
1044          8 = /dev/rd/c3d1 Second disk, whole disk
1045            ...
1046        248 = /dev/rd/c3d31 32nd disk, whole disk
1047
1048        Partitions are handled as for major 48.
1049
1050 52 char Spellcaster DataComm/BRI ISDN card
1051          0 = /dev/dcbri0 First DataComm card
1052          1 = /dev/dcbri1 Second DataComm card
1053          2 = /dev/dcbri2 Third DataComm card
1054          3 = /dev/dcbri3 Fourth DataComm card
1055
1056 52 block Mylex DAC960 PCI RAID controller; fifth controller
1057          0 = /dev/rd/c4d0 First disk, whole disk
1058          8 = /dev/rd/c4d1 Second disk, whole disk
1059            ...
1060        248 = /dev/rd/c4d31 32nd disk, whole disk
1061
1062        Partitions are handled as for major 48.
1063
1064 53 char BDM interface for remote debugging MC683xx microcontrollers
1065          0 = /dev/pd_bdm0 PD BDM interface on lp0
1066          1 = /dev/pd_bdm1 PD BDM interface on lp1
1067          2 = /dev/pd_bdm2 PD BDM interface on lp2
1068          4 = /dev/icd_bdm0 ICD BDM interface on lp0
1069          5 = /dev/icd_bdm1 ICD BDM interface on lp1
1070          6 = /dev/icd_bdm2 ICD BDM interface on lp2
1071
1072        This device is used for the interfacing to the MC683xx
1073        microcontrollers via Background Debug Mode by use of a
1074        Parallel Port interface. PD is the Motorola Public
1075        Domain Interface and ICD is the commercial interface
1076        by P&E.
1077
1078 53 block Mylex DAC960 PCI RAID controller; sixth controller
1079          0 = /dev/rd/c5d0 First disk, whole disk
1080          8 = /dev/rd/c5d1 Second disk, whole disk
1081            ...
1082        248 = /dev/rd/c5d31 32nd disk, whole disk
1083
1084        Partitions are handled as for major 48.
1085
1086 54 char Electrocardiognosis Holter serial card
1087          0 = /dev/holter0 First Holter port
1088          1 = /dev/holter1 Second Holter port
1089          2 = /dev/holter2 Third Holter port
1090
1091        A custom serial card used by Electrocardiognosis SRL
1092        <mseritan@ottonel.pub.ro> to transfer data from Holter
1093        24-hour heart monitoring equipment.
1094
1095 54 block Mylex DAC960 PCI RAID controller; seventh controller
1096          0 = /dev/rd/c6d0 First disk, whole disk
1097          8 = /dev/rd/c6d1 Second disk, whole disk
1098            ...
1099        248 = /dev/rd/c6d31 32nd disk, whole disk
1100
1101        Partitions are handled as for major 48.
1102
1103 55 char DSP56001 digital signal processor
1104          0 = /dev/dsp56k First DSP56001
1105
1106 55 block Mylex DAC960 PCI RAID controller; eighth controller
1107          0 = /dev/rd/c7d0 First disk, whole disk
1108          8 = /dev/rd/c7d1 Second disk, whole disk
1109            ...
1110        248 = /dev/rd/c7d31 32nd disk, whole disk
1111
1112        Partitions are handled as for major 48.
1113
1114 56 char Apple Desktop Bus
1115          0 = /dev/adb ADB bus control
1116
1117        Additional devices will be added to this number, all
1118        starting with /dev/adb.
1119
1120 56 block Fifth IDE hard disk/CD-ROM interface
1121          0 = /dev/hdi Master: whole disk (or CD-ROM)
1122         64 = /dev/hdj Slave: whole disk (or CD-ROM)
1123
1124        Partitions are handled the same way as for the first
1125        interface (see major number 3).
1126
1127 57 char Hayes ESP serial card
1128          0 = /dev/ttyP0 First ESP port
1129          1 = /dev/ttyP1 Second ESP port
1130            ...
1131
1132 57 block Sixth IDE hard disk/CD-ROM interface
1133          0 = /dev/hdk Master: whole disk (or CD-ROM)
1134         64 = /dev/hdl Slave: whole disk (or CD-ROM)
1135
1136        Partitions are handled the same way as for the first
1137        interface (see major number 3).
1138
1139 58 char Hayes ESP serial card - alternate devices
1140          0 = /dev/cup0 Callout device for ttyP0
1141          1 = /dev/cup1 Callout device for ttyP1
1142            ...
1143
1144 58 block Reserved for logical volume manager
1145
1146 59 char sf firewall package
1147          0 = /dev/firewall Communication with sf kernel module
1148
1149 59 block Generic PDA filesystem device
1150          0 = /dev/pda0 First PDA device
1151          1 = /dev/pda1 Second PDA device
1152            ...
1153
1154        The pda devices are used to mount filesystems on
1155        remote pda's (basically slow handheld machines with
1156        proprietary OS's and limited memory and storage
1157        running small fs translation drivers) through serial /
1158        IRDA / parallel links.
1159
1160        NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1161
1162 60-63 char LOCAL/EXPERIMENTAL USE
1163
1164 60-63 block LOCAL/EXPERIMENTAL USE
1165        Allocated for local/experimental use. For devices not
1166        assigned official numbers, these ranges should be
1167        used in order to avoid conflicting with future assignments.
1168
1169 64 char ENskip kernel encryption package
1170          0 = /dev/enskip Communication with ENskip kernel module
1171
1172 64 block Scramdisk/DriveCrypt encrypted devices
1173          0 = /dev/scramdisk/master Master node for ioctls
1174          1 = /dev/scramdisk/1 First encrypted device
1175          2 = /dev/scramdisk/2 Second encrypted device
1176          ...
1177        255 = /dev/scramdisk/255 255th encrypted device
1178
1179        The filename of the encrypted container and the passwords
1180        are sent via ioctls (using the sdmount tool) to the master
1181        node which then activates them via one of the
1182        /dev/scramdisk/x nodes for loop mounting (all handled
1183        through the sdmount tool).
1184
1185        Requested by: andy@scramdisklinux.org
1186
1187 65 char Sundance "plink" Transputer boards (obsolete, unused)
1188          0 = /dev/plink0 First plink device
1189          1 = /dev/plink1 Second plink device
1190          2 = /dev/plink2 Third plink device
1191          3 = /dev/plink3 Fourth plink device
1192         64 = /dev/rplink0 First plink device, raw
1193         65 = /dev/rplink1 Second plink device, raw
1194         66 = /dev/rplink2 Third plink device, raw
1195         67 = /dev/rplink3 Fourth plink device, raw
1196        128 = /dev/plink0d First plink device, debug
1197        129 = /dev/plink1d Second plink device, debug
1198        130 = /dev/plink2d Third plink device, debug
1199        131 = /dev/plink3d Fourth plink device, debug
1200        192 = /dev/rplink0d First plink device, raw, debug
1201        193 = /dev/rplink1d Second plink device, raw, debug
1202        194 = /dev/rplink2d Third plink device, raw, debug
1203        195 = /dev/rplink3d Fourth plink device, raw, debug
1204
1205        This is a commercial driver; contact James Howes
1206        <jth@prosig.demon.co.uk> for information.
1207
1208 65 block SCSI disk devices (16-31)
1209          0 = /dev/sdq 17th SCSI disk whole disk
1210         16 = /dev/sdr 18th SCSI disk whole disk
1211         32 = /dev/sds 19th SCSI disk whole disk
1212            ...
1213        240 = /dev/sdaf 32nd SCSI disk whole disk
1214
1215        Partitions are handled in the same way as for IDE
1216        disks (see major number 3) except that the limit on
1217        partitions is 15.
1218
1219 66 char YARC PowerPC PCI coprocessor card
1220          0 = /dev/yppcpci0 First YARC card
1221          1 = /dev/yppcpci1 Second YARC card
1222            ...
1223
1224 66 block SCSI disk devices (32-47)
1225          0 = /dev/sdag 33th SCSI disk whole disk
1226         16 = /dev/sdah 34th SCSI disk whole disk
1227         32 = /dev/sdai 35th SCSI disk whole disk
1228            ...
1229        240 = /dev/sdav 48nd SCSI disk whole disk
1230
1231        Partitions are handled in the same way as for IDE
1232        disks (see major number 3) except that the limit on
1233        partitions is 15.
1234
1235 67 char Coda network file system
1236          0 = /dev/cfs0 Coda cache manager
1237
1238        See http://www.coda.cs.cmu.edu for information about Coda.
1239
1240 67 block SCSI disk devices (48-63)
1241          0 = /dev/sdaw 49th SCSI disk whole disk
1242         16 = /dev/sdax 50th SCSI disk whole disk
1243         32 = /dev/sday 51st SCSI disk whole disk
1244            ...
1245        240 = /dev/sdbl 64th SCSI disk whole disk
1246
1247        Partitions are handled in the same way as for IDE
1248        disks (see major number 3) except that the limit on
1249        partitions is 15.
1250
1251 68 char CAPI 2.0 interface
1252          0 = /dev/capi20 Control device
1253          1 = /dev/capi20.00 First CAPI 2.0 application
1254          2 = /dev/capi20.01 Second CAPI 2.0 application
1255            ...
1256         20 = /dev/capi20.19 19th CAPI 2.0 application
1257
1258        ISDN CAPI 2.0 driver for use with CAPI 2.0
1259        applications; currently supports the AVM B1 card.
1260
1261 68 block SCSI disk devices (64-79)
1262          0 = /dev/sdbm 65th SCSI disk whole disk
1263         16 = /dev/sdbn 66th SCSI disk whole disk
1264         32 = /dev/sdbo 67th SCSI disk whole disk
1265            ...
1266        240 = /dev/sdcb 80th SCSI disk whole disk
1267
1268        Partitions are handled in the same way as for IDE
1269        disks (see major number 3) except that the limit on
1270        partitions is 15.
1271
1272 69 char MA16 numeric accelerator card
1273          0 = /dev/ma16 Board memory access
1274
1275 69 block SCSI disk devices (80-95)
1276          0 = /dev/sdcc 81st SCSI disk whole disk
1277         16 = /dev/sdcd 82nd SCSI disk whole disk
1278         32 = /dev/sdce 83th SCSI disk whole disk
1279            ...
1280        240 = /dev/sdcr 96th SCSI disk whole disk
1281
1282        Partitions are handled in the same way as for IDE
1283        disks (see major number 3) except that the limit on
1284        partitions is 15.
1285
1286 70 char SpellCaster Protocol Services Interface
1287          0 = /dev/apscfg Configuration interface
1288          1 = /dev/apsauth Authentication interface
1289          2 = /dev/apslog Logging interface
1290          3 = /dev/apsdbg Debugging interface
1291         64 = /dev/apsisdn ISDN command interface
1292         65 = /dev/apsasync Async command interface
1293        128 = /dev/apsmon Monitor interface
1294
1295 70 block SCSI disk devices (96-111)
1296          0 = /dev/sdcs 97th SCSI disk whole disk
1297         16 = /dev/sdct 98th SCSI disk whole disk
1298         32 = /dev/sdcu 99th SCSI disk whole disk
1299            ...
1300        240 = /dev/sddh 112nd SCSI disk whole disk
1301
1302        Partitions are handled in the same way as for IDE
1303        disks (see major number 3) except that the limit on
1304        partitions is 15.
1305
1306 71 char Computone IntelliPort II serial card
1307          0 = /dev/ttyF0 IntelliPort II board 0, port 0
1308          1 = /dev/ttyF1 IntelliPort II board 0, port 1
1309            ...
1310         63 = /dev/ttyF63 IntelliPort II board 0, port 63
1311         64 = /dev/ttyF64 IntelliPort II board 1, port 0
1312         65 = /dev/ttyF65 IntelliPort II board 1, port 1
1313            ...
1314        127 = /dev/ttyF127 IntelliPort II board 1, port 63
1315        128 = /dev/ttyF128 IntelliPort II board 2, port 0
1316        129 = /dev/ttyF129 IntelliPort II board 2, port 1
1317            ...
1318        191 = /dev/ttyF191 IntelliPort II board 2, port 63
1319        192 = /dev/ttyF192 IntelliPort II board 3, port 0
1320        193 = /dev/ttyF193 IntelliPort II board 3, port 1
1321            ...
1322        255 = /dev/ttyF255 IntelliPort II board 3, port 63
1323
1324 71 block SCSI disk devices (112-127)
1325          0 = /dev/sddi 113th SCSI disk whole disk
1326         16 = /dev/sddj 114th SCSI disk whole disk
1327         32 = /dev/sddk 115th SCSI disk whole disk
1328            ...
1329        240 = /dev/sddx 128th SCSI disk whole disk
1330
1331        Partitions are handled in the same way as for IDE
1332        disks (see major number 3) except that the limit on
1333        partitions is 15.
1334
1335 72 char Computone IntelliPort II serial card - alternate devices
1336          0 = /dev/cuf0 Callout device for ttyF0
1337          1 = /dev/cuf1 Callout device for ttyF1
1338            ...
1339         63 = /dev/cuf63 Callout device for ttyF63
1340         64 = /dev/cuf64 Callout device for ttyF64
1341         65 = /dev/cuf65 Callout device for ttyF65
1342            ...
1343        127 = /dev/cuf127 Callout device for ttyF127
1344        128 = /dev/cuf128 Callout device for ttyF128
1345        129 = /dev/cuf129 Callout device for ttyF129
1346            ...
1347        191 = /dev/cuf191 Callout device for ttyF191
1348        192 = /dev/cuf192 Callout device for ttyF192
1349        193 = /dev/cuf193 Callout device for ttyF193
1350            ...
1351        255 = /dev/cuf255 Callout device for ttyF255
1352
1353 72 block Compaq Intelligent Drive Array, first controller
1354          0 = /dev/ida/c0d0 First logical drive whole disk
1355         16 = /dev/ida/c0d1 Second logical drive whole disk
1356            ...
1357        240 = /dev/ida/c0d15 16th logical drive whole disk
1358
1359        Partitions are handled the same way as for Mylex
1360        DAC960 (see major number 48) except that the limit on
1361        partitions is 15.
1362
1363 73 char Computone IntelliPort II serial card - control devices
1364          0 = /dev/ip2ipl0 Loadware device for board 0
1365          1 = /dev/ip2stat0 Status device for board 0
1366          4 = /dev/ip2ipl1 Loadware device for board 1
1367          5 = /dev/ip2stat1 Status device for board 1
1368          8 = /dev/ip2ipl2 Loadware device for board 2
1369          9 = /dev/ip2stat2 Status device for board 2
1370         12 = /dev/ip2ipl3 Loadware device for board 3
1371         13 = /dev/ip2stat3 Status device for board 3
1372
1373 73 block Compaq Intelligent Drive Array, second controller
1374          0 = /dev/ida/c1d0 First logical drive whole disk
1375         16 = /dev/ida/c1d1 Second logical drive whole disk
1376            ...
1377        240 = /dev/ida/c1d15 16th logical drive whole disk
1378
1379        Partitions are handled the same way as for Mylex
1380        DAC960 (see major number 48) except that the limit on
1381        partitions is 15.
1382
1383 74 char SCI bridge
1384          0 = /dev/SCI/0 SCI device 0
1385          1 = /dev/SCI/1 SCI device 1
1386            ...
1387
1388        Currently for Dolphin Interconnect Solutions' PCI-SCI
1389        bridge.
1390
1391 74 block Compaq Intelligent Drive Array, third controller
1392          0 = /dev/ida/c2d0 First logical drive whole disk
1393         16 = /dev/ida/c2d1 Second logical drive whole disk
1394            ...
1395        240 = /dev/ida/c2d15 16th logical drive whole disk
1396
1397        Partitions are handled the same way as for Mylex
1398        DAC960 (see major number 48) except that the limit on
1399        partitions is 15.
1400
1401 75 char Specialix IO8+ serial card
1402          0 = /dev/ttyW0 First IO8+ port, first card
1403          1 = /dev/ttyW1 Second IO8+ port, first card
1404            ...
1405          8 = /dev/ttyW8 First IO8+ port, second card
1406            ...
1407
1408 75 block Compaq Intelligent Drive Array, fourth controller
1409          0 = /dev/ida/c3d0 First logical drive whole disk
1410         16 = /dev/ida/c3d1 Second logical drive whole disk
1411            ...
1412        240 = /dev/ida/c3d15 16th logical drive whole disk
1413
1414        Partitions are handled the same way as for Mylex
1415        DAC960 (see major number 48) except that the limit on
1416        partitions is 15.
1417
1418 76 char Specialix IO8+ serial card - alternate devices
1419          0 = /dev/cuw0 Callout device for ttyW0
1420          1 = /dev/cuw1 Callout device for ttyW1
1421            ...
1422          8 = /dev/cuw8 Callout device for ttyW8
1423            ...
1424
1425 76 block Compaq Intelligent Drive Array, fifth controller
1426          0 = /dev/ida/c4d0 First logical drive whole disk
1427         16 = /dev/ida/c4d1 Second logical drive whole disk
1428            ...
1429        240 = /dev/ida/c4d15 16th logical drive whole disk
1430
1431        Partitions are handled the same way as for Mylex
1432        DAC960 (see major number 48) except that the limit on
1433        partitions is 15.
1434
1435
1436 77 char ComScire Quantum Noise Generator
1437          0 = /dev/qng ComScire Quantum Noise Generator
1438
1439 77 block Compaq Intelligent Drive Array, sixth controller
1440          0 = /dev/ida/c5d0 First logical drive whole disk
1441         16 = /dev/ida/c5d1 Second logical drive whole disk
1442            ...
1443        240 = /dev/ida/c5d15 16th logical drive whole disk
1444
1445        Partitions are handled the same way as for Mylex
1446        DAC960 (see major number 48) except that the limit on
1447        partitions is 15.
1448
1449 78 char PAM Software's multimodem boards
1450          0 = /dev/ttyM0 First PAM modem
1451          1 = /dev/ttyM1 Second PAM modem
1452            ...
1453
1454 78 block Compaq Intelligent Drive Array, seventh controller
1455          0 = /dev/ida/c6d0 First logical drive whole disk
1456         16 = /dev/ida/c6d1 Second logical drive whole disk
1457            ...
1458        240 = /dev/ida/c6d15 16th logical drive whole disk
1459
1460        Partitions are handled the same way as for Mylex
1461        DAC960 (see major number 48) except that the limit on
1462        partitions is 15.
1463
1464 79 char PAM Software's multimodem boards - alternate devices
1465          0 = /dev/cum0 Callout device for ttyM0
1466          1 = /dev/cum1 Callout device for ttyM1
1467            ...
1468
1469 79 block Compaq Intelligent Drive Array, eighth controller
1470          0 = /dev/ida/c7d0 First logical drive whole disk
1471         16 = /dev/ida/c7d1 Second logical drive whole disk
1472            ...
1473        240 = /dev/ida/c715 16th logical drive whole disk
1474
1475        Partitions are handled the same way as for Mylex
1476        DAC960 (see major number 48) except that the limit on
1477        partitions is 15.
1478
1479 80 char Photometrics AT200 CCD camera
1480          0 = /dev/at200 Photometrics AT200 CCD camera
1481
1482 80 block I2O hard disk
1483          0 = /dev/i2o/hda First I2O hard disk, whole disk
1484         16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1485            ...
1486        240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1487
1488        Partitions are handled in the same way as for IDE
1489        disks (see major number 3) except that the limit on
1490        partitions is 15.
1491
1492 81 char video4linux
1493          0 = /dev/video0 Video capture/overlay device
1494            ...
1495         63 = /dev/video63 Video capture/overlay device
1496         64 = /dev/radio0 Radio device
1497            ...
1498        127 = /dev/radio63 Radio device
1499        224 = /dev/vbi0 Vertical blank interrupt
1500            ...
1501        255 = /dev/vbi31 Vertical blank interrupt
1502
1503 81 block I2O hard disk
1504          0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1505         16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1506            ...
1507        240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1508
1509        Partitions are handled in the same way as for IDE
1510        disks (see major number 3) except that the limit on
1511        partitions is 15.
1512
1513 82 char WiNRADiO communications receiver card
1514          0 = /dev/winradio0 First WiNRADiO card
1515          1 = /dev/winradio1 Second WiNRADiO card
1516            ...
1517
1518        The driver and documentation may be obtained from
1519        http://www.winradio.com/
1520
1521 82 block I2O hard disk
1522          0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1523         16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1524            ...
1525        240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1526
1527        Partitions are handled in the same way as for IDE
1528        disks (see major number 3) except that the limit on
1529        partitions is 15.
1530
1531 83 char Matrox mga_vid video driver
1532          0 = /dev/mga_vid0 1st video card
1533         1 = /dev/mga_vid1 2nd video card
1534         2 = /dev/mga_vid2 3rd video card
1535          ...
1536            15 = /dev/mga_vid15 16th video card
1537
1538 83 block I2O hard disk
1539          0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1540         16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1541            ...
1542        240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1543
1544        Partitions are handled in the same way as for IDE
1545        disks (see major number 3) except that the limit on
1546        partitions is 15.
1547
1548 84 char Ikon 1011[57] Versatec Greensheet Interface
1549          0 = /dev/ihcp0 First Greensheet port
1550          1 = /dev/ihcp1 Second Greensheet port
1551
1552 84 block I2O hard disk
1553          0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1554         16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1555            ...
1556        240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1557
1558        Partitions are handled in the same way as for IDE
1559        disks (see major number 3) except that the limit on
1560        partitions is 15.
1561
1562 85 char Linux/SGI shared memory input queue
1563          0 = /dev/shmiq Master shared input queue
1564          1 = /dev/qcntl0 First device pushed
1565          2 = /dev/qcntl1 Second device pushed
1566            ...
1567
1568 85 block I2O hard disk
1569          0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1570         16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1571            ...
1572        240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1573
1574        Partitions are handled in the same way as for IDE
1575        disks (see major number 3) except that the limit on
1576        partitions is 15.
1577
1578 86 char SCSI media changer
1579          0 = /dev/sch0 First SCSI media changer
1580          1 = /dev/sch1 Second SCSI media changer
1581            ...
1582
1583 86 block I2O hard disk
1584          0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1585         16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1586            ...
1587        240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1588
1589        Partitions are handled in the same way as for IDE
1590        disks (see major number 3) except that the limit on
1591        partitions is 15.
1592
1593 87 char Sony Control-A1 stereo control bus
1594          0 = /dev/controla0 First device on chain
1595          1 = /dev/controla1 Second device on chain
1596            ...
1597
1598 87 block I2O hard disk
1599          0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1600         16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1601            ...
1602        240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1603
1604        Partitions are handled in the same way as for IDE
1605        disks (see major number 3) except that the limit on
1606        partitions is 15.
1607
1608 88 char COMX synchronous serial card
1609          0 = /dev/comx0 COMX channel 0
1610          1 = /dev/comx1 COMX channel 1
1611            ...
1612
1613 88 block Seventh IDE hard disk/CD-ROM interface
1614          0 = /dev/hdm Master: whole disk (or CD-ROM)
1615         64 = /dev/hdn Slave: whole disk (or CD-ROM)
1616
1617        Partitions are handled the same way as for the first
1618        interface (see major number 3).
1619
1620 89 char I2C bus interface
1621          0 = /dev/i2c-0 First I2C adapter
1622          1 = /dev/i2c-1 Second I2C adapter
1623            ...
1624
1625 89 block Eighth IDE hard disk/CD-ROM interface
1626          0 = /dev/hdo Master: whole disk (or CD-ROM)
1627         64 = /dev/hdp Slave: whole disk (or CD-ROM)
1628
1629        Partitions are handled the same way as for the first
1630        interface (see major number 3).
1631
1632 90 char Memory Technology Device (RAM, ROM, Flash)
1633          0 = /dev/mtd0 First MTD (rw)
1634          1 = /dev/mtdr0 First MTD (ro)
1635            ...
1636         30 = /dev/mtd15 16th MTD (rw)
1637         31 = /dev/mtdr15 16th MTD (ro)
1638
1639 90 block Ninth IDE hard disk/CD-ROM interface
1640          0 = /dev/hdq Master: whole disk (or CD-ROM)
1641         64 = /dev/hdr Slave: whole disk (or CD-ROM)
1642
1643        Partitions are handled the same way as for the first
1644        interface (see major number 3).
1645
1646 91 char CAN-Bus devices
1647          0 = /dev/can0 First CAN-Bus controller
1648          1 = /dev/can1 Second CAN-Bus controller
1649            ...
1650
1651 91 block Tenth IDE hard disk/CD-ROM interface
1652          0 = /dev/hds Master: whole disk (or CD-ROM)
1653         64 = /dev/hdt Slave: whole disk (or CD-ROM)
1654
1655        Partitions are handled the same way as for the first
1656        interface (see major number 3).
1657
1658 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1659
1660 92 block PPDD encrypted disk driver
1661          0 = /dev/ppdd0 First encrypted disk
1662          1 = /dev/ppdd1 Second encrypted disk
1663            ...
1664
1665        Partitions are handled in the same way as for IDE
1666        disks (see major number 3) except that the limit on
1667        partitions is 15.
1668
1669 93 char
1670
1671 93 block NAND Flash Translation Layer filesystem
1672          0 = /dev/nftla First NFTL layer
1673         16 = /dev/nftlb Second NFTL layer
1674            ...
1675        240 = /dev/nftlp 16th NTFL layer
1676
1677 94 char
1678
1679 94 block IBM S/390 DASD block storage
1680              0 = /dev/dasda First DASD device, major
1681              1 = /dev/dasda1 First DASD device, block 1
1682              2 = /dev/dasda2 First DASD device, block 2
1683              3 = /dev/dasda3 First DASD device, block 3
1684              4 = /dev/dasdb Second DASD device, major
1685              5 = /dev/dasdb1 Second DASD device, block 1
1686              6 = /dev/dasdb2 Second DASD device, block 2
1687              7 = /dev/dasdb3 Second DASD device, block 3
1688            ...
1689
1690 95 char IP filter
1691          0 = /dev/ipl Filter control device/log file
1692          1 = /dev/ipnat NAT control device/log file
1693          2 = /dev/ipstate State information log file
1694          3 = /dev/ipauth Authentication control device/log file
1695            ...
1696
1697 96 char Parallel port ATAPI tape devices
1698          0 = /dev/pt0 First parallel port ATAPI tape
1699          1 = /dev/pt1 Second parallel port ATAPI tape
1700            ...
1701        128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1702        129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1703            ...
1704
1705 96 block Inverse NAND Flash Translation Layer
1706          0 = /dev/inftla First INFTL layer
1707         16 = /dev/inftlb Second INFTL layer
1708            ...
1709        240 = /dev/inftlp 16th INTFL layer
1710
1711 97 char Parallel port generic ATAPI interface
1712          0 = /dev/pg0 First parallel port ATAPI device
1713          1 = /dev/pg1 Second parallel port ATAPI device
1714          2 = /dev/pg2 Third parallel port ATAPI device
1715          3 = /dev/pg3 Fourth parallel port ATAPI device
1716
1717        These devices support the same API as the generic SCSI
1718        devices.
1719
1720 98 char Control and Measurement Device (comedi)
1721          0 = /dev/comedi0 First comedi device
1722          1 = /dev/comedi1 Second comedi device
1723            ...
1724
1725        See http://stm.lbl.gov/comedi.
1726
1727 98 block User-mode virtual block device
1728          0 = /dev/ubda First user-mode block device
1729         16 = /dev/udbb Second user-mode block device
1730            ...
1731
1732        Partitions are handled in the same way as for IDE
1733        disks (see major number 3) except that the limit on
1734        partitions is 15.
1735
1736        This device is used by the user-mode virtual kernel port.
1737
1738 99 char Raw parallel ports
1739          0 = /dev/parport0 First parallel port
1740          1 = /dev/parport1 Second parallel port
1741            ...
1742
1743 99 block JavaStation flash disk
1744          0 = /dev/jsfd JavaStation flash disk
1745
1746100 char Telephony for Linux
1747          0 = /dev/phone0 First telephony device
1748          1 = /dev/phone1 Second telephony device
1749            ...
1750
1751101 char Motorola DSP 56xxx board
1752          0 = /dev/mdspstat Status information
1753          1 = /dev/mdsp1 First DSP board I/O controls
1754            ...
1755         16 = /dev/mdsp16 16th DSP board I/O controls
1756
1757101 block AMI HyperDisk RAID controller
1758          0 = /dev/amiraid/ar0 First array whole disk
1759         16 = /dev/amiraid/ar1 Second array whole disk
1760            ...
1761        240 = /dev/amiraid/ar15 16th array whole disk
1762
1763        For each device, partitions are added as:
1764          0 = /dev/amiraid/ar? Whole disk
1765          1 = /dev/amiraid/ar?p1 First partition
1766          2 = /dev/amiraid/ar?p2 Second partition
1767            ...
1768         15 = /dev/amiraid/ar?p15 15th partition
1769
1770102 char
1771
1772102 block Compressed block device
1773          0 = /dev/cbd/a First compressed block device, whole device
1774         16 = /dev/cbd/b Second compressed block device, whole device
1775            ...
1776        240 = /dev/cbd/p 16th compressed block device, whole device
1777
1778        Partitions are handled in the same way as for IDE
1779        disks (see major number 3) except that the limit on
1780        partitions is 15.
1781
1782103 char Arla network file system
1783          0 = /dev/nnpfs0 First NNPFS device
1784          1 = /dev/nnpfs1 Second NNPFS device
1785
1786        Arla is a free clone of the Andrew File System, AFS.
1787        The NNPFS device gives user mode filesystem
1788        implementations a kernel presence for caching and easy
1789        mounting. For more information about the project,
1790        write to <arla-drinkers@stacken.kth.se> or see
1791        http://www.stacken.kth.se/project/arla/
1792
1793103 block Audit device
1794          0 = /dev/audit Audit device
1795
1796104 char Flash BIOS support
1797
1798104 block Compaq Next Generation Drive Array, first controller
1799          0 = /dev/cciss/c0d0 First logical drive, whole disk
1800         16 = /dev/cciss/c0d1 Second logical drive, whole disk
1801            ...
1802        240 = /dev/cciss/c0d15 16th logical drive, whole disk
1803
1804        Partitions are handled the same way as for Mylex
1805        DAC960 (see major number 48) except that the limit on
1806        partitions is 15.
1807
1808105 char Comtrol VS-1000 serial controller
1809          0 = /dev/ttyV0 First VS-1000 port
1810          1 = /dev/ttyV1 Second VS-1000 port
1811            ...
1812
1813105 block Compaq Next Generation Drive Array, second controller
1814          0 = /dev/cciss/c1d0 First logical drive, whole disk
1815         16 = /dev/cciss/c1d1 Second logical drive, whole disk
1816            ...
1817        240 = /dev/cciss/c1d15 16th logical drive, whole disk
1818
1819        Partitions are handled the same way as for Mylex
1820        DAC960 (see major number 48) except that the limit on
1821        partitions is 15.
1822
1823106 char Comtrol VS-1000 serial controller - alternate devices
1824          0 = /dev/cuv0 First VS-1000 port
1825          1 = /dev/cuv1 Second VS-1000 port
1826            ...
1827
1828106 block Compaq Next Generation Drive Array, third controller
1829          0 = /dev/cciss/c2d0 First logical drive, whole disk
1830         16 = /dev/cciss/c2d1 Second logical drive, whole disk
1831            ...
1832        240 = /dev/cciss/c2d15 16th logical drive, whole disk
1833
1834        Partitions are handled the same way as for Mylex
1835        DAC960 (see major number 48) except that the limit on
1836        partitions is 15.
1837
1838107 char 3Dfx Voodoo Graphics device
1839          0 = /dev/3dfx Primary 3Dfx graphics device
1840
1841107 block Compaq Next Generation Drive Array, fourth controller
1842          0 = /dev/cciss/c3d0 First logical drive, whole disk
1843         16 = /dev/cciss/c3d1 Second logical drive, whole disk
1844            ...
1845        240 = /dev/cciss/c3d15 16th logical drive, whole disk
1846
1847        Partitions are handled the same way as for Mylex
1848        DAC960 (see major number 48) except that the limit on
1849        partitions is 15.
1850
1851108 char Device independent PPP interface
1852          0 = /dev/ppp Device independent PPP interface
1853
1854108 block Compaq Next Generation Drive Array, fifth controller
1855          0 = /dev/cciss/c4d0 First logical drive, whole disk
1856         16 = /dev/cciss/c4d1 Second logical drive, whole disk
1857            ...
1858        240 = /dev/cciss/c4d15 16th logical drive, whole disk
1859
1860        Partitions are handled the same way as for Mylex
1861        DAC960 (see major number 48) except that the limit on
1862        partitions is 15.
1863
1864109 char Reserved for logical volume manager
1865
1866109 block Compaq Next Generation Drive Array, sixth controller
1867          0 = /dev/cciss/c5d0 First logical drive, whole disk
1868         16 = /dev/cciss/c5d1 Second logical drive, whole disk
1869            ...
1870        240 = /dev/cciss/c5d15 16th logical drive, whole disk
1871
1872        Partitions are handled the same way as for Mylex
1873        DAC960 (see major number 48) except that the limit on
1874        partitions is 15.
1875
1876110 char miroMEDIA Surround board
1877          0 = /dev/srnd0 First miroMEDIA Surround board
1878          1 = /dev/srnd1 Second miroMEDIA Surround board
1879            ...
1880
1881110 block Compaq Next Generation Drive Array, seventh controller
1882          0 = /dev/cciss/c6d0 First logical drive, whole disk
1883         16 = /dev/cciss/c6d1 Second logical drive, whole disk
1884            ...
1885        240 = /dev/cciss/c6d15 16th logical drive, whole disk
1886
1887        Partitions are handled the same way as for Mylex
1888        DAC960 (see major number 48) except that the limit on
1889        partitions is 15.
1890
1891111 char
1892
1893111 block Compaq Next Generation Drive Array, eighth controller
1894          0 = /dev/cciss/c7d0 First logical drive, whole disk
1895         16 = /dev/cciss/c7d1 Second logical drive, whole disk
1896            ...
1897        240 = /dev/cciss/c7d15 16th logical drive, whole disk
1898
1899        Partitions are handled the same way as for Mylex
1900        DAC960 (see major number 48) except that the limit on
1901        partitions is 15.
1902
1903112 char ISI serial card
1904          0 = /dev/ttyM0 First ISI port
1905          1 = /dev/ttyM1 Second ISI port
1906            ...
1907
1908        There is currently a device-naming conflict between
1909        these and PAM multimodems (major 78).
1910
1911112 block IBM iSeries virtual disk
1912          0 = /dev/iseries/vda First virtual disk, whole disk
1913          8 = /dev/iseries/vdb Second virtual disk, whole disk
1914            ...
1915        200 = /dev/iseries/vdz 26th virtual disk, whole disk
1916        208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1917            ...
1918        248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1919
1920        Partitions are handled in the same way as for IDE
1921        disks (see major number 3) except that the limit on
1922        partitions is 7.
1923
1924113 char ISI serial card - alternate devices
1925          0 = /dev/cum0 Callout device for ttyM0
1926          1 = /dev/cum1 Callout device for ttyM1
1927            ...
1928
1929113 block IBM iSeries virtual CD-ROM
1930          0 = /dev/iseries/vcda First virtual CD-ROM
1931          1 = /dev/iseries/vcdb Second virtual CD-ROM
1932            ...
1933
1934114 char Picture Elements ISE board
1935          0 = /dev/ise0 First ISE board
1936          1 = /dev/ise1 Second ISE board
1937            ...
1938        128 = /dev/isex0 Control node for first ISE board
1939        129 = /dev/isex1 Control node for second ISE board
1940            ...
1941
1942        The ISE board is an embedded computer, optimized for
1943        image processing. The /dev/iseN nodes are the general
1944        I/O access to the board, the /dev/isex0 nodes command
1945        nodes used to control the board.
1946
1947114 block IDE BIOS powered software RAID interfaces such as the
1948                Promise Fastrak
1949
1950                  0 = /dev/ataraid/d0
1951                  1 = /dev/ataraid/d0p1
1952                  2 = /dev/ataraid/d0p2
1953                  ...
1954                 16 = /dev/ataraid/d1
1955                 17 = /dev/ataraid/d1p1
1956                 18 = /dev/ataraid/d1p2
1957                  ...
1958                255 = /dev/ataraid/d15p15
1959
1960        Partitions are handled in the same way as for IDE
1961        disks (see major number 3) except that the limit on
1962        partitions is 15.
1963
1964115 char TI link cable devices (115 was formerly the console driver speaker)
1965          0 = /dev/tipar0 Parallel cable on first parallel port
1966          ...
1967          7 = /dev/tipar7 Parallel cable on seventh parallel port
1968
1969          8 = /dev/tiser0 Serial cable on first serial port
1970          ...
1971         15 = /dev/tiser7 Serial cable on seventh serial port
1972
1973         16 = /dev/tiusb0 First USB cable
1974          ...
1975         47 = /dev/tiusb31 32nd USB cable
1976
1977115 block NetWare (NWFS) Devices (0-255)
1978
1979                The NWFS (NetWare) devices are used to present a
1980                collection of NetWare Mirror Groups or NetWare
1981                Partitions as a logical storage segment for
1982                use in mounting NetWare volumes. A maximum of
1983                256 NetWare volumes can be supported in a single
1984                machine.
1985
1986                http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1987
1988                0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1989                1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1990                2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1991                      ...
1992                255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1993
1994116 char Advanced Linux Sound Driver (ALSA)
1995
1996116 block MicroMemory battery backed RAM adapter (NVRAM)
1997                Supports 16 boards, 15 partitions each.
1998                Requested by neilb at cse.unsw.edu.au.
1999
2000         0 = /dev/umem/d0 Whole of first board
2001         1 = /dev/umem/d0p1 First partition of first board
2002         2 = /dev/umem/d0p2 Second partition of first board
2003        15 = /dev/umem/d0p15 15th partition of first board
2004
2005        16 = /dev/umem/d1 Whole of second board
2006        17 = /dev/umem/d1p1 First partition of second board
2007            ...
2008        255= /dev/umem/d15p15 15th partition of 16th board.
2009
2010117 char COSA/SRP synchronous serial card
2011          0 = /dev/cosa0c0 1st board, 1st channel
2012          1 = /dev/cosa0c1 1st board, 2nd channel
2013            ...
2014         16 = /dev/cosa1c0 2nd board, 1st channel
2015         17 = /dev/cosa1c1 2nd board, 2nd channel
2016            ...
2017
2018117 block Enterprise Volume Management System (EVMS)
2019
2020                The EVMS driver uses a layered, plug-in model to provide
2021                unparalleled flexibility and extensibility in managing
2022                storage. This allows for easy expansion or customization
2023                of various levels of volume management. Requested by
2024                Mark Peloquin (peloquin at us.ibm.com).
2025
2026                Note: EVMS populates and manages all the devnodes in
2027                /dev/evms.
2028
2029                http://sf.net/projects/evms
2030
2031                  0 = /dev/evms/block_device EVMS block device
2032                  1 = /dev/evms/legacyname1 First EVMS legacy device
2033                  2 = /dev/evms/legacyname2 Second EVMS legacy device
2034                    ...
2035                    Both ranges can grow (down or up) until they meet.
2036                    ...
2037                254 = /dev/evms/EVMSname2 Second EVMS native device
2038                255 = /dev/evms/EVMSname1 First EVMS native device
2039
2040                Note: legacyname(s) are derived from the normal legacy
2041                device names. For example, /dev/hda5 would become
2042                /dev/evms/hda5.
2043
2044118 char IBM Cryptographic Accelerator
2045          0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2046          1 = /dev/ica0 IBMCA Device 0
2047          2 = /dev/ica1 IBMCA Device 1
2048            ...
2049
2050119 char VMware virtual network control
2051          0 = /dev/vnet0 1st virtual network
2052          1 = /dev/vnet1 2nd virtual network
2053            ...
2054
2055120-127 char LOCAL/EXPERIMENTAL USE
2056
2057120-127 block LOCAL/EXPERIMENTAL USE
2058        Allocated for local/experimental use. For devices not
2059        assigned official numbers, these ranges should be
2060        used in order to avoid conflicting with future assignments.
2061
2062128-135 char Unix98 PTY masters
2063
2064        These devices should not have corresponding device
2065        nodes; instead they should be accessed through the
2066        /dev/ptmx cloning interface.
2067
2068128 block SCSI disk devices (128-143)
2069                  0 = /dev/sddy 129th SCSI disk whole disk
2070                 16 = /dev/sddz 130th SCSI disk whole disk
2071                 32 = /dev/sdea 131th SCSI disk whole disk
2072                    ...
2073                240 = /dev/sden 144th SCSI disk whole disk
2074
2075        Partitions are handled in the same way as for IDE
2076        disks (see major number 3) except that the limit on
2077        partitions is 15.
2078
2079129 block SCSI disk devices (144-159)
2080                  0 = /dev/sdeo 145th SCSI disk whole disk
2081                 16 = /dev/sdep 146th SCSI disk whole disk
2082                 32 = /dev/sdeq 147th SCSI disk whole disk
2083                    ...
2084                240 = /dev/sdfd 160th SCSI disk whole disk
2085
2086        Partitions are handled in the same way as for IDE
2087        disks (see major number 3) except that the limit on
2088        partitions is 15.
2089
2090130 char (Misc devices)
2091
2092130 block SCSI disk devices (160-175)
2093                  0 = /dev/sdfe 161st SCSI disk whole disk
2094                 16 = /dev/sdff 162nd SCSI disk whole disk
2095                 32 = /dev/sdfg 163rd SCSI disk whole disk
2096                    ...
2097                240 = /dev/sdft 176th SCSI disk whole disk
2098
2099        Partitions are handled in the same way as for IDE
2100        disks (see major number 3) except that the limit on
2101        partitions is 15.
2102
2103131 block SCSI disk devices (176-191)
2104                  0 = /dev/sdfu 177th SCSI disk whole disk
2105                 16 = /dev/sdfv 178th SCSI disk whole disk
2106                 32 = /dev/sdfw 179th SCSI disk whole disk
2107                    ...
2108                240 = /dev/sdgj 192nd SCSI disk whole disk
2109
2110        Partitions are handled in the same way as for IDE
2111        disks (see major number 3) except that the limit on
2112        partitions is 15.
2113
2114132 block SCSI disk devices (192-207)
2115                  0 = /dev/sdgk 193rd SCSI disk whole disk
2116                 16 = /dev/sdgl 194th SCSI disk whole disk
2117                 32 = /dev/sdgm 195th SCSI disk whole disk
2118                    ...
2119                240 = /dev/sdgz 208th SCSI disk whole disk
2120
2121        Partitions are handled in the same way as for IDE
2122        disks (see major number 3) except that the limit on
2123        partitions is 15.
2124
2125133 block SCSI disk devices (208-223)
2126                  0 = /dev/sdha 209th SCSI disk whole disk
2127                 16 = /dev/sdhb 210th SCSI disk whole disk
2128                 32 = /dev/sdhc 211th SCSI disk whole disk
2129                    ...
2130                240 = /dev/sdhp 224th SCSI disk whole disk
2131
2132        Partitions are handled in the same way as for IDE
2133        disks (see major number 3) except that the limit on
2134        partitions is 15.
2135
2136134 block SCSI disk devices (224-239)
2137                  0 = /dev/sdhq 225th SCSI disk whole disk
2138                 16 = /dev/sdhr 226th SCSI disk whole disk
2139                 32 = /dev/sdhs 227th SCSI disk whole disk
2140                    ...
2141                240 = /dev/sdif 240th SCSI disk whole disk
2142
2143        Partitions are handled in the same way as for IDE
2144        disks (see major number 3) except that the limit on
2145        partitions is 15.
2146
2147135 block SCSI disk devices (240-255)
2148                  0 = /dev/sdig 241st SCSI disk whole disk
2149                 16 = /dev/sdih 242nd SCSI disk whole disk
2150                 32 = /dev/sdih 243rd SCSI disk whole disk
2151                    ...
2152                240 = /dev/sdiv 256th SCSI disk whole disk
2153
2154        Partitions are handled in the same way as for IDE
2155        disks (see major number 3) except that the limit on
2156        partitions is 15.
2157
2158136-143 char Unix98 PTY slaves
2159          0 = /dev/pts/0 First Unix98 pseudo-TTY
2160          1 = /dev/pts/1 Second Unix98 pseudo-TTY
2161            ...
2162
2163        These device nodes are automatically generated with
2164        the proper permissions and modes by mounting the
2165        devpts filesystem onto /dev/pts with the appropriate
2166        mount options (distribution dependent, however, on
2167        *most* distributions the appropriate options are
2168        "mode=0620,gid=<gid of the "tty" group>".)
2169
2170136 block Mylex DAC960 PCI RAID controller; ninth controller
2171          0 = /dev/rd/c8d0 First disk, whole disk
2172          8 = /dev/rd/c8d1 Second disk, whole disk
2173            ...
2174        248 = /dev/rd/c8d31 32nd disk, whole disk
2175
2176        Partitions are handled as for major 48.
2177
2178137 block Mylex DAC960 PCI RAID controller; tenth controller
2179          0 = /dev/rd/c9d0 First disk, whole disk
2180          8 = /dev/rd/c9d1 Second disk, whole disk
2181            ...
2182        248 = /dev/rd/c9d31 32nd disk, whole disk
2183
2184        Partitions are handled as for major 48.
2185
2186138 block Mylex DAC960 PCI RAID controller; eleventh controller
2187          0 = /dev/rd/c10d0 First disk, whole disk
2188          8 = /dev/rd/c10d1 Second disk, whole disk
2189            ...
2190        248 = /dev/rd/c10d31 32nd disk, whole disk
2191
2192        Partitions are handled as for major 48.
2193
2194139 block Mylex DAC960 PCI RAID controller; twelfth controller
2195          0 = /dev/rd/c11d0 First disk, whole disk
2196          8 = /dev/rd/c11d1 Second disk, whole disk
2197            ...
2198        248 = /dev/rd/c11d31 32nd disk, whole disk
2199
2200        Partitions are handled as for major 48.
2201
2202140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2203          0 = /dev/rd/c12d0 First disk, whole disk
2204          8 = /dev/rd/c12d1 Second disk, whole disk
2205            ...
2206        248 = /dev/rd/c12d31 32nd disk, whole disk
2207
2208        Partitions are handled as for major 48.
2209
2210141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2211          0 = /dev/rd/c13d0 First disk, whole disk
2212          8 = /dev/rd/c13d1 Second disk, whole disk
2213            ...
2214        248 = /dev/rd/c13d31 32nd disk, whole disk
2215
2216        Partitions are handled as for major 48.
2217
2218142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2219          0 = /dev/rd/c14d0 First disk, whole disk
2220          8 = /dev/rd/c14d1 Second disk, whole disk
2221            ...
2222        248 = /dev/rd/c14d31 32nd disk, whole disk
2223
2224        Partitions are handled as for major 48.
2225
2226143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2227          0 = /dev/rd/c15d0 First disk, whole disk
2228          8 = /dev/rd/c15d1 Second disk, whole disk
2229            ...
2230        248 = /dev/rd/c15d31 32nd disk, whole disk
2231
2232        Partitions are handled as for major 48.
2233
2234144 char Encapsulated PPP
2235          0 = /dev/pppox0 First PPP over Ethernet
2236            ...
2237         63 = /dev/pppox63 64th PPP over Ethernet
2238
2239        This is primarily used for ADSL.
2240
2241        The SST 5136-DN DeviceNet interface driver has been
2242        relocated to major 183 due to an unfortunate conflict.
2243
2244144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2245          0 = mounted device 256
2246        255 = mounted device 511
2247
2248145 char SAM9407-based soundcard
2249          0 = /dev/sam0_mixer
2250          1 = /dev/sam0_sequencer
2251          2 = /dev/sam0_midi00
2252          3 = /dev/sam0_dsp
2253          4 = /dev/sam0_audio
2254          6 = /dev/sam0_sndstat
2255         18 = /dev/sam0_midi01
2256         34 = /dev/sam0_midi02
2257         50 = /dev/sam0_midi03
2258         64 = /dev/sam1_mixer
2259            ...
2260        128 = /dev/sam2_mixer
2261            ...
2262        192 = /dev/sam3_mixer
2263            ...
2264
2265        Device functions match OSS, but offer a number of
2266        addons, which are sam9407 specific. OSS can be
2267        operated simultaneously, taking care of the codec.
2268
2269145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2270          0 = mounted device 512
2271        255 = mounted device 767
2272
2273146 char SYSTRAM SCRAMNet mirrored-memory network
2274          0 = /dev/scramnet0 First SCRAMNet device
2275          1 = /dev/scramnet1 Second SCRAMNet device
2276            ...
2277
2278146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2279          0 = mounted device 768
2280        255 = mounted device 1023
2281
2282147 char Aureal Semiconductor Vortex Audio device
2283          0 = /dev/aureal0 First Aureal Vortex
2284          1 = /dev/aureal1 Second Aureal Vortex
2285            ...
2286
2287147 block Distributed Replicated Block Device (DRBD)
2288          0 = /dev/drbd0 First DRBD device
2289          1 = /dev/drbd1 Second DRBD device
2290            ...
2291
2292148 char Technology Concepts serial card
2293          0 = /dev/ttyT0 First TCL port
2294          1 = /dev/ttyT1 Second TCL port
2295            ...
2296
2297149 char Technology Concepts serial card - alternate devices
2298          0 = /dev/cut0 Callout device for ttyT0
2299          1 = /dev/cut0 Callout device for ttyT1
2300            ...
2301
2302150 char Real-Time Linux FIFOs
2303          0 = /dev/rtf0 First RTLinux FIFO
2304          1 = /dev/rtf1 Second RTLinux FIFO
2305            ...
2306
2307151 char DPT I2O SmartRaid V controller
2308          0 = /dev/dpti0 First DPT I2O adapter
2309          1 = /dev/dpti1 Second DPT I2O adapter
2310            ...
2311
2312152 char EtherDrive Control Device
2313          0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2314          1 = /dev/etherd/err Monitor errors
2315          2 = /dev/etherd/raw Raw AoE packet monitor
2316
2317152 block EtherDrive Block Devices
2318          0 = /dev/etherd/0 EtherDrive 0
2319            ...
2320        255 = /dev/etherd/255 EtherDrive 255
2321
2322153 char SPI Bus Interface (sometimes referred to as MicroWire)
2323          0 = /dev/spi0 First SPI device on the bus
2324          1 = /dev/spi1 Second SPI device on the bus
2325            ...
2326         15 = /dev/spi15 Sixteenth SPI device on the bus
2327
2328153 block Enhanced Metadisk RAID (EMD) storage units
2329          0 = /dev/emd/0 First unit
2330          1 = /dev/emd/0p1 Partition 1 on First unit
2331          2 = /dev/emd/0p2 Partition 2 on First unit
2332            ...
2333         15 = /dev/emd/0p15 Partition 15 on First unit
2334
2335         16 = /dev/emd/1 Second unit
2336         32 = /dev/emd/2 Third unit
2337            ...
2338        240 = /dev/emd/15 Sixteenth unit
2339
2340        Partitions are handled in the same way as for IDE
2341        disks (see major number 3) except that the limit on
2342        partitions is 15.
2343
2344154 char Specialix RIO serial card
2345          0 = /dev/ttySR0 First RIO port
2346            ...
2347        255 = /dev/ttySR255 256th RIO port
2348
2349155 char Specialix RIO serial card - alternate devices
2350          0 = /dev/cusr0 Callout device for ttySR0
2351            ...
2352        255 = /dev/cusr255 Callout device for ttySR255
2353
2354156 char Specialix RIO serial card
2355          0 = /dev/ttySR256 257th RIO port
2356            ...
2357        255 = /dev/ttySR511 512th RIO port
2358
2359157 char Specialix RIO serial card - alternate devices
2360          0 = /dev/cusr256 Callout device for ttySR256
2361            ...
2362        255 = /dev/cusr511 Callout device for ttySR511
2363
2364158 char Dialogic GammaLink fax driver
2365          0 = /dev/gfax0 GammaLink channel 0
2366          1 = /dev/gfax1 GammaLink channel 1
2367            ...
2368
2369159 char RESERVED
2370
2371159 block RESERVED
2372
2373160 char General Purpose Instrument Bus (GPIB)
2374          0 = /dev/gpib0 First GPIB bus
2375          1 = /dev/gpib1 Second GPIB bus
2376            ...
2377
2378160 block Carmel 8-port SATA Disks on First Controller
2379          0 = /dev/carmel/0 SATA disk 0 whole disk
2380          1 = /dev/carmel/0p1 SATA disk 0 partition 1
2381            ...
2382         31 = /dev/carmel/0p31 SATA disk 0 partition 31
2383
2384         32 = /dev/carmel/1 SATA disk 1 whole disk
2385         64 = /dev/carmel/2 SATA disk 2 whole disk
2386            ...
2387        224 = /dev/carmel/7 SATA disk 7 whole disk
2388
2389        Partitions are handled in the same way as for IDE
2390        disks (see major number 3) except that the limit on
2391        partitions is 31.
2392
2393161 char IrCOMM devices (IrDA serial/parallel emulation)
2394          0 = /dev/ircomm0 First IrCOMM device
2395          1 = /dev/ircomm1 Second IrCOMM device
2396            ...
2397         16 = /dev/irlpt0 First IrLPT device
2398         17 = /dev/irlpt1 Second IrLPT device
2399            ...
2400
2401161 block Carmel 8-port SATA Disks on Second Controller
2402          0 = /dev/carmel/8 SATA disk 8 whole disk
2403          1 = /dev/carmel/8p1 SATA disk 8 partition 1
2404            ...
2405         31 = /dev/carmel/8p31 SATA disk 8 partition 31
2406
2407         32 = /dev/carmel/9 SATA disk 9 whole disk
2408         64 = /dev/carmel/10 SATA disk 10 whole disk
2409            ...
2410        224 = /dev/carmel/15 SATA disk 15 whole disk
2411
2412        Partitions are handled in the same way as for IDE
2413        disks (see major number 3) except that the limit on
2414        partitions is 31.
2415
2416162 char Raw block device interface
2417          0 = /dev/rawctl Raw I/O control device
2418          1 = /dev/raw/raw1 First raw I/O device
2419          2 = /dev/raw/raw2 Second raw I/O device
2420            ...
2421
2422163 char
2423
2424164 char Chase Research AT/PCI-Fast serial card
2425          0 = /dev/ttyCH0 AT/PCI-Fast board 0, port 0
2426            ...
2427         15 = /dev/ttyCH15 AT/PCI-Fast board 0, port 15
2428         16 = /dev/ttyCH16 AT/PCI-Fast board 1, port 0
2429            ...
2430         31 = /dev/ttyCH31 AT/PCI-Fast board 1, port 15
2431         32 = /dev/ttyCH32 AT/PCI-Fast board 2, port 0
2432            ...
2433         47 = /dev/ttyCH47 AT/PCI-Fast board 2, port 15
2434         48 = /dev/ttyCH48 AT/PCI-Fast board 3, port 0
2435            ...
2436         63 = /dev/ttyCH63 AT/PCI-Fast board 3, port 15
2437
2438165 char Chase Research AT/PCI-Fast serial card - alternate devices
2439          0 = /dev/cuch0 Callout device for ttyCH0
2440            ...
2441         63 = /dev/cuch63 Callout device for ttyCH63
2442
2443166 char ACM USB modems
2444          0 = /dev/ttyACM0 First ACM modem
2445          1 = /dev/ttyACM1 Second ACM modem
2446            ...
2447
2448167 char ACM USB modems - alternate devices
2449          0 = /dev/cuacm0 Callout device for ttyACM0
2450          1 = /dev/cuacm1 Callout device for ttyACM1
2451            ...
2452
2453168 char Eracom CSA7000 PCI encryption adaptor
2454          0 = /dev/ecsa0 First CSA7000
2455          1 = /dev/ecsa1 Second CSA7000
2456            ...
2457
2458169 char Eracom CSA8000 PCI encryption adaptor
2459          0 = /dev/ecsa8-0 First CSA8000
2460          1 = /dev/ecsa8-1 Second CSA8000
2461            ...
2462
2463170 char AMI MegaRAC remote access controller
2464          0 = /dev/megarac0 First MegaRAC card
2465          1 = /dev/megarac1 Second MegaRAC card
2466            ...
2467
2468171 char Reserved for IEEE 1394 (Firewire)
2469
2470172 char Moxa Intellio serial card
2471          0 = /dev/ttyMX0 First Moxa port
2472          1 = /dev/ttyMX1 Second Moxa port
2473            ...
2474        127 = /dev/ttyMX127 128th Moxa port
2475        128 = /dev/moxactl Moxa control port
2476
2477173 char Moxa Intellio serial card - alternate devices
2478          0 = /dev/cumx0 Callout device for ttyMX0
2479          1 = /dev/cumx1 Callout device for ttyMX1
2480            ...
2481        127 = /dev/cumx127 Callout device for ttyMX127
2482
2483174 char SmartIO serial card
2484          0 = /dev/ttySI0 First SmartIO port
2485          1 = /dev/ttySI1 Second SmartIO port
2486            ...
2487
2488175 char SmartIO serial card - alternate devices
2489          0 = /dev/cusi0 Callout device for ttySI0
2490          1 = /dev/cusi1 Callout device for ttySI1
2491            ...
2492
2493176 char nCipher nFast PCI crypto accelerator
2494          0 = /dev/nfastpci0 First nFast PCI device
2495          1 = /dev/nfastpci1 First nFast PCI device
2496            ...
2497
2498177 char TI PCILynx memory spaces
2499          0 = /dev/pcilynx/aux0 AUX space of first PCILynx card
2500            ...
2501         15 = /dev/pcilynx/aux15 AUX space of 16th PCILynx card
2502         16 = /dev/pcilynx/rom0 ROM space of first PCILynx card
2503            ...
2504         31 = /dev/pcilynx/rom15 ROM space of 16th PCILynx card
2505         32 = /dev/pcilynx/ram0 RAM space of first PCILynx card
2506            ...
2507         47 = /dev/pcilynx/ram15 RAM space of 16th PCILynx card
2508
2509178 char Giganet cLAN1xxx virtual interface adapter
2510          0 = /dev/clanvi0 First cLAN adapter
2511          1 = /dev/clanvi1 Second cLAN adapter
2512            ...
2513
2514179 block MMC block devices
2515          0 = /dev/mmcblk0 First SD/MMC card
2516          1 = /dev/mmcblk0p1 First partition on first MMC card
2517          8 = /dev/mmcblk1 Second SD/MMC card
2518            ...
2519
2520        The start of next SD/MMC card can be configured with
2521        CONFIG_MMC_BLOCK_MINORS, or overridden at boot/modprobe
2522        time using the mmcblk.perdev_minors option. That would
2523        bump the offset between each card to be the configured
2524        value instead of the default 8.
2525
2526179 char CCube DVXChip-based PCI products
2527          0 = /dev/dvxirq0 First DVX device
2528          1 = /dev/dvxirq1 Second DVX device
2529            ...
2530
2531180 char USB devices
2532          0 = /dev/usb/lp0 First USB printer
2533            ...
2534         15 = /dev/usb/lp15 16th USB printer
2535         48 = /dev/usb/scanner0 First USB scanner
2536            ...
2537         63 = /dev/usb/scanner15 16th USB scanner
2538         64 = /dev/usb/rio500 Diamond Rio 500
2539         65 = /dev/usb/usblcd USBLCD Interface (info@usblcd.de)
2540         66 = /dev/usb/cpad0 Synaptics cPad (mouse/LCD)
2541         96 = /dev/usb/hiddev0 1st USB HID device
2542            ...
2543        111 = /dev/usb/hiddev15 16th USB HID device
2544        112 = /dev/usb/auer0 1st auerswald ISDN device
2545            ...
2546        127 = /dev/usb/auer15 16th auerswald ISDN device
2547        128 = /dev/usb/brlvgr0 First Braille Voyager device
2548            ...
2549        131 = /dev/usb/brlvgr3 Fourth Braille Voyager device
2550        132 = /dev/usb/idmouse ID Mouse (fingerprint scanner) device
2551        133 = /dev/usb/sisusbvga1 First SiSUSB VGA device
2552            ...
2553        140 = /dev/usb/sisusbvga8 Eighth SISUSB VGA device
2554        144 = /dev/usb/lcd USB LCD device
2555        160 = /dev/usb/legousbtower0 1st USB Legotower device
2556            ...
2557        175 = /dev/usb/legousbtower15 16th USB Legotower device
2558        176 = /dev/usb/usbtmc1 First USB TMC device
2559           ...
2560        191 = /dev/usb/usbtmc16 16th USB TMC device
2561        192 = /dev/usb/yurex1 First USB Yurex device
2562           ...
2563        209 = /dev/usb/yurex16 16th USB Yurex device
2564        240 = /dev/usb/dabusb0 First daubusb device
2565            ...
2566        243 = /dev/usb/dabusb3 Fourth dabusb device
2567
2568180 block USB block devices
2569          0 = /dev/uba First USB block device
2570          8 = /dev/ubb Second USB block device
2571         16 = /dev/ubc Third USB block device
2572             ...
2573
2574181 char Conrad Electronic parallel port radio clocks
2575          0 = /dev/pcfclock0 First Conrad radio clock
2576          1 = /dev/pcfclock1 Second Conrad radio clock
2577            ...
2578
2579182 char Picture Elements THR2 binarizer
2580          0 = /dev/pethr0 First THR2 board
2581          1 = /dev/pethr1 Second THR2 board
2582            ...
2583
2584183 char SST 5136-DN DeviceNet interface
2585          0 = /dev/ss5136dn0 First DeviceNet interface
2586          1 = /dev/ss5136dn1 Second DeviceNet interface
2587            ...
2588
2589        This device used to be assigned to major number 144.
2590        It had to be moved due to an unfortunate conflict.
2591
2592184 char Picture Elements' video simulator/sender
2593          0 = /dev/pevss0 First sender board
2594          1 = /dev/pevss1 Second sender board
2595            ...
2596
2597185 char InterMezzo high availability file system
2598          0 = /dev/intermezzo0 First cache manager
2599          1 = /dev/intermezzo1 Second cache manager
2600            ...
2601
2602        See http://web.archive.org/web/20080115195241/
2603        http://inter-mezzo.org/index.html
2604
2605186 char Object-based storage control device
2606          0 = /dev/obd0 First obd control device
2607          1 = /dev/obd1 Second obd control device
2608            ...
2609
2610        See ftp://ftp.lustre.org/pub/obd for code and information.
2611
2612187 char DESkey hardware encryption device
2613          0 = /dev/deskey0 First DES key
2614          1 = /dev/deskey1 Second DES key
2615            ...
2616
2617188 char USB serial converters
2618          0 = /dev/ttyUSB0 First USB serial converter
2619          1 = /dev/ttyUSB1 Second USB serial converter
2620            ...
2621
2622189 char USB serial converters - alternate devices
2623          0 = /dev/cuusb0 Callout device for ttyUSB0
2624          1 = /dev/cuusb1 Callout device for ttyUSB1
2625            ...
2626
2627190 char Kansas City tracker/tuner card
2628          0 = /dev/kctt0 First KCT/T card
2629          1 = /dev/kctt1 Second KCT/T card
2630            ...
2631
2632191 char Reserved for PCMCIA
2633
2634192 char Kernel profiling interface
2635          0 = /dev/profile Profiling control device
2636          1 = /dev/profile0 Profiling device for CPU 0
2637          2 = /dev/profile1 Profiling device for CPU 1
2638            ...
2639
2640193 char Kernel event-tracing interface
2641          0 = /dev/trace Tracing control device
2642          1 = /dev/trace0 Tracing device for CPU 0
2643          2 = /dev/trace1 Tracing device for CPU 1
2644            ...
2645
2646194 char linVideoStreams (LINVS)
2647          0 = /dev/mvideo/status0 Video compression status
2648          1 = /dev/mvideo/stream0 Video stream
2649          2 = /dev/mvideo/frame0 Single compressed frame
2650          3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2651          4 = /dev/mvideo/codec0 Direct codec access
2652          5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2653
2654         16 = /dev/mvideo/status1 Second device
2655            ...
2656         32 = /dev/mvideo/status2 Third device
2657            ...
2658            ...
2659        240 = /dev/mvideo/status15 16th device
2660            ...
2661
2662195 char Nvidia graphics devices
2663          0 = /dev/nvidia0 First Nvidia card
2664          1 = /dev/nvidia1 Second Nvidia card
2665            ...
2666        255 = /dev/nvidiactl Nvidia card control device
2667
2668196 char Tormenta T1 card
2669          0 = /dev/tor/0 Master control channel for all cards
2670          1 = /dev/tor/1 First DS0
2671          2 = /dev/tor/2 Second DS0
2672            ...
2673         48 = /dev/tor/48 48th DS0
2674         49 = /dev/tor/49 First pseudo-channel
2675         50 = /dev/tor/50 Second pseudo-channel
2676            ...
2677
2678197 char OpenTNF tracing facility
2679          0 = /dev/tnf/t0 Trace 0 data extraction
2680          1 = /dev/tnf/t1 Trace 1 data extraction
2681            ...
2682        128 = /dev/tnf/status Tracing facility status
2683        130 = /dev/tnf/trace Tracing device
2684
2685198 char Total Impact TPMP2 quad coprocessor PCI card
2686          0 = /dev/tpmp2/0 First card
2687          1 = /dev/tpmp2/1 Second card
2688            ...
2689
2690199 char Veritas volume manager (VxVM) volumes
2691          0 = /dev/vx/rdsk/*/* First volume
2692          1 = /dev/vx/rdsk/*/* Second volume
2693            ...
2694
2695199 block Veritas volume manager (VxVM) volumes
2696          0 = /dev/vx/dsk/*/* First volume
2697          1 = /dev/vx/dsk/*/* Second volume
2698            ...
2699
2700        The namespace in these directories is maintained by
2701        the user space VxVM software.
2702
2703200 char Veritas VxVM configuration interface
2704                  0 = /dev/vx/config Configuration access node
2705                  1 = /dev/vx/trace Volume i/o trace access node
2706                  2 = /dev/vx/iod Volume i/o daemon access node
2707                  3 = /dev/vx/info Volume information access node
2708                  4 = /dev/vx/task Volume tasks access node
2709                  5 = /dev/vx/taskmon Volume tasks monitor daemon
2710
2711201 char Veritas VxVM dynamic multipathing driver
2712          0 = /dev/vx/rdmp/* First multipath device
2713          1 = /dev/vx/rdmp/* Second multipath device
2714            ...
2715201 block Veritas VxVM dynamic multipathing driver
2716          0 = /dev/vx/dmp/* First multipath device
2717          1 = /dev/vx/dmp/* Second multipath device
2718            ...
2719
2720        The namespace in these directories is maintained by
2721        the user space VxVM software.
2722
2723202 char CPU model-specific registers
2724          0 = /dev/cpu/0/msr MSRs on CPU 0
2725          1 = /dev/cpu/1/msr MSRs on CPU 1
2726            ...
2727
2728202 block Xen Virtual Block Device
2729          0 = /dev/xvda First Xen VBD whole disk
2730          16 = /dev/xvdb Second Xen VBD whole disk
2731          32 = /dev/xvdc Third Xen VBD whole disk
2732            ...
2733          240 = /dev/xvdp Sixteenth Xen VBD whole disk
2734
2735                Partitions are handled in the same way as for IDE
2736                disks (see major number 3) except that the limit on
2737                partitions is 15.
2738
2739203 char CPU CPUID information
2740          0 = /dev/cpu/0/cpuid CPUID on CPU 0
2741          1 = /dev/cpu/1/cpuid CPUID on CPU 1
2742            ...
2743
2744204 char Low-density serial ports
2745          0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2746          1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2747          2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2748          3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2749          4 = /dev/ttyFB0 Intel Footbridge (ARM)
2750          5 = /dev/ttySA0 StrongARM builtin serial port 0
2751          6 = /dev/ttySA1 StrongARM builtin serial port 1
2752          7 = /dev/ttySA2 StrongARM builtin serial port 2
2753          8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2754          9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2755         10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2756         11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2757         12 = /dev/ttyFW0 Firmware console - port 0
2758         13 = /dev/ttyFW1 Firmware console - port 1
2759         14 = /dev/ttyFW2 Firmware console - port 2
2760         15 = /dev/ttyFW3 Firmware console - port 3
2761         16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2762            ...
2763         31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2764         32 = /dev/ttyDB0 DataBooster serial port 0
2765            ...
2766         39 = /dev/ttyDB7 DataBooster serial port 7
2767         40 = /dev/ttySG0 SGI Altix console port
2768         41 = /dev/ttySMX0 Motorola i.MX - port 0
2769         42 = /dev/ttySMX1 Motorola i.MX - port 1
2770         43 = /dev/ttySMX2 Motorola i.MX - port 2
2771         44 = /dev/ttyMM0 Marvell MPSC - port 0
2772         45 = /dev/ttyMM1 Marvell MPSC - port 1
2773         46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2774            ...
2775         47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2776         50 = /dev/ttyIOC0 Altix serial card
2777            ...
2778         81 = /dev/ttyIOC31 Altix serial card
2779         82 = /dev/ttyVR0 NEC VR4100 series SIU
2780         83 = /dev/ttyVR1 NEC VR4100 series DSIU
2781         84 = /dev/ttyIOC84 Altix ioc4 serial card
2782            ...
2783         115 = /dev/ttyIOC115 Altix ioc4 serial card
2784         116 = /dev/ttySIOC0 Altix ioc3 serial card
2785            ...
2786         147 = /dev/ttySIOC31 Altix ioc3 serial card
2787         148 = /dev/ttyPSC0 PPC PSC - port 0
2788            ...
2789         153 = /dev/ttyPSC5 PPC PSC - port 5
2790         154 = /dev/ttyAT0 ATMEL serial port 0
2791            ...
2792         169 = /dev/ttyAT15 ATMEL serial port 15
2793         170 = /dev/ttyNX0 Hilscher netX serial port 0
2794            ...
2795         185 = /dev/ttyNX15 Hilscher netX serial port 15
2796         186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2797         187 = /dev/ttyUL0 Xilinx uartlite - port 0
2798            ...
2799         190 = /dev/ttyUL3 Xilinx uartlite - port 3
2800         191 = /dev/xvc0 Xen virtual console - port 0
2801         192 = /dev/ttyPZ0 pmac_zilog - port 0
2802            ...
2803         195 = /dev/ttyPZ3 pmac_zilog - port 3
2804         196 = /dev/ttyTX0 TX39/49 serial port 0
2805            ...
2806         204 = /dev/ttyTX7 TX39/49 serial port 7
2807         205 = /dev/ttySC0 SC26xx serial port 0
2808         206 = /dev/ttySC1 SC26xx serial port 1
2809         207 = /dev/ttySC2 SC26xx serial port 2
2810         208 = /dev/ttySC3 SC26xx serial port 3
2811         209 = /dev/ttyMAX0 MAX3100 serial port 0
2812         210 = /dev/ttyMAX1 MAX3100 serial port 1
2813         211 = /dev/ttyMAX2 MAX3100 serial port 2
2814         212 = /dev/ttyMAX3 MAX3100 serial port 3
2815
2816205 char Low-density serial ports (alternate device)
2817          0 = /dev/culu0 Callout device for ttyLU0
2818          1 = /dev/culu1 Callout device for ttyLU1
2819          2 = /dev/culu2 Callout device for ttyLU2
2820          3 = /dev/culu3 Callout device for ttyLU3
2821          4 = /dev/cufb0 Callout device for ttyFB0
2822          5 = /dev/cusa0 Callout device for ttySA0
2823          6 = /dev/cusa1 Callout device for ttySA1
2824          7 = /dev/cusa2 Callout device for ttySA2
2825          8 = /dev/cusc0 Callout device for ttySC0
2826          9 = /dev/cusc1 Callout device for ttySC1
2827         10 = /dev/cusc2 Callout device for ttySC2
2828         11 = /dev/cusc3 Callout device for ttySC3
2829         12 = /dev/cufw0 Callout device for ttyFW0
2830         13 = /dev/cufw1 Callout device for ttyFW1
2831         14 = /dev/cufw2 Callout device for ttyFW2
2832         15 = /dev/cufw3 Callout device for ttyFW3
2833         16 = /dev/cuam0 Callout device for ttyAM0
2834            ...
2835         31 = /dev/cuam15 Callout device for ttyAM15
2836         32 = /dev/cudb0 Callout device for ttyDB0
2837            ...
2838         39 = /dev/cudb7 Callout device for ttyDB7
2839         40 = /dev/cusg0 Callout device for ttySG0
2840         41 = /dev/ttycusmx0 Callout device for ttySMX0
2841         42 = /dev/ttycusmx1 Callout device for ttySMX1
2842         43 = /dev/ttycusmx2 Callout device for ttySMX2
2843         46 = /dev/cucpm0 Callout device for ttyCPM0
2844            ...
2845         49 = /dev/cucpm5 Callout device for ttyCPM5
2846         50 = /dev/cuioc40 Callout device for ttyIOC40
2847            ...
2848         81 = /dev/cuioc431 Callout device for ttyIOC431
2849         82 = /dev/cuvr0 Callout device for ttyVR0
2850         83 = /dev/cuvr1 Callout device for ttyVR1
2851
2852206 char OnStream SC-x0 tape devices
2853          0 = /dev/osst0 First OnStream SCSI tape, mode 0
2854          1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2855            ...
2856         32 = /dev/osst0l First OnStream SCSI tape, mode 1
2857         33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2858            ...
2859         64 = /dev/osst0m First OnStream SCSI tape, mode 2
2860         65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2861            ...
2862         96 = /dev/osst0a First OnStream SCSI tape, mode 3
2863         97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2864            ...
2865        128 = /dev/nosst0 No rewind version of /dev/osst0
2866        129 = /dev/nosst1 No rewind version of /dev/osst1
2867            ...
2868        160 = /dev/nosst0l No rewind version of /dev/osst0l
2869        161 = /dev/nosst1l No rewind version of /dev/osst1l
2870            ...
2871        192 = /dev/nosst0m No rewind version of /dev/osst0m
2872        193 = /dev/nosst1m No rewind version of /dev/osst1m
2873            ...
2874        224 = /dev/nosst0a No rewind version of /dev/osst0a
2875        225 = /dev/nosst1a No rewind version of /dev/osst1a
2876            ...
2877
2878        The OnStream SC-x0 SCSI tapes do not support the
2879        standard SCSI SASD command set and therefore need
2880        their own driver "osst". Note that the IDE, USB (and
2881        maybe ParPort) versions may be driven via ide-scsi or
2882        usb-storage SCSI emulation and this osst device and
2883        driver as well. The ADR-x0 drives are QIC-157
2884        compliant and don't need osst.
2885
2886207 char Compaq ProLiant health feature indicate
2887          0 = /dev/cpqhealth/cpqw Redirector interface
2888          1 = /dev/cpqhealth/crom EISA CROM
2889          2 = /dev/cpqhealth/cdt Data Table
2890          3 = /dev/cpqhealth/cevt Event Log
2891          4 = /dev/cpqhealth/casr Automatic Server Recovery
2892          5 = /dev/cpqhealth/cecc ECC Memory
2893          6 = /dev/cpqhealth/cmca Machine Check Architecture
2894          7 = /dev/cpqhealth/ccsm Deprecated CDT
2895          8 = /dev/cpqhealth/cnmi NMI Handling
2896          9 = /dev/cpqhealth/css Sideshow Management
2897         10 = /dev/cpqhealth/cram CMOS interface
2898         11 = /dev/cpqhealth/cpci PCI IRQ interface
2899
2900208 char User space serial ports
2901          0 = /dev/ttyU0 First user space serial port
2902          1 = /dev/ttyU1 Second user space serial port
2903            ...
2904
2905209 char User space serial ports (alternate devices)
2906          0 = /dev/cuu0 Callout device for ttyU0
2907          1 = /dev/cuu1 Callout device for ttyU1
2908            ...
2909
2910210 char SBE, Inc. sync/async serial card
2911          0 = /dev/sbei/wxcfg0 Configuration device for board 0
2912          1 = /dev/sbei/dld0 Download device for board 0
2913          2 = /dev/sbei/wan00 WAN device, port 0, board 0
2914          3 = /dev/sbei/wan01 WAN device, port 1, board 0
2915          4 = /dev/sbei/wan02 WAN device, port 2, board 0
2916          5 = /dev/sbei/wan03 WAN device, port 3, board 0
2917          6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2918          7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2919          8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2920          9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2921         10 = /dev/sbei/wxcfg1 Configuration device for board 1
2922         11 = /dev/sbei/dld1 Download device for board 1
2923         12 = /dev/sbei/wan10 WAN device, port 0, board 1
2924         13 = /dev/sbei/wan11 WAN device, port 1, board 1
2925         14 = /dev/sbei/wan12 WAN device, port 2, board 1
2926         15 = /dev/sbei/wan13 WAN device, port 3, board 1
2927         16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2928         17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2929         18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2930         19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2931            ...
2932
2933        Yes, each board is really spaced 10 (decimal) apart.
2934
2935211 char Addinum CPCI1500 digital I/O card
2936          0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2937          1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2938            ...
2939
2940212 char LinuxTV.org DVB driver subsystem
2941          0 = /dev/dvb/adapter0/video0 first video decoder of first card
2942          1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2943          2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2944          3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2945          4 = /dev/dvb/adapter0/demux0 first demux device of first card
2946          5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2947          6 = /dev/dvb/adapter0/ca0 first common access port of first card
2948          7 = /dev/dvb/adapter0/net0 first network device of first card
2949          8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2950          9 = /dev/dvb/adapter0/video1 second video decoder of first card
2951            ...
2952         64 = /dev/dvb/adapter1/video0 first video decoder of second card
2953            ...
2954        128 = /dev/dvb/adapter2/video0 first video decoder of third card
2955            ...
2956        196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2957
2958216 char Bluetooth RFCOMM TTY devices
2959          0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2960          1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2961            ...
2962
2963217 char Bluetooth RFCOMM TTY devices (alternate devices)
2964          0 = /dev/curf0 Callout device for rfcomm0
2965          1 = /dev/curf1 Callout device for rfcomm1
2966            ...
2967
2968218 char The Logical Company bus Unibus/Qbus adapters
2969          0 = /dev/logicalco/bci/0 First bus adapter
2970          1 = /dev/logicalco/bci/1 First bus adapter
2971            ...
2972
2973219 char The Logical Company DCI-1300 digital I/O card
2974          0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2975          1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2976            ...
2977
2978220 char Myricom Myrinet "GM" board
2979          0 = /dev/myricom/gm0 First Myrinet GM board
2980          1 = /dev/myricom/gmp0 First board "root access"
2981          2 = /dev/myricom/gm1 Second Myrinet GM board
2982          3 = /dev/myricom/gmp1 Second board "root access"
2983            ...
2984
2985221 char VME bus
2986          0 = /dev/bus/vme/m0 First master image
2987          1 = /dev/bus/vme/m1 Second master image
2988          2 = /dev/bus/vme/m2 Third master image
2989          3 = /dev/bus/vme/m3 Fourth master image
2990          4 = /dev/bus/vme/s0 First slave image
2991          5 = /dev/bus/vme/s1 Second slave image
2992          6 = /dev/bus/vme/s2 Third slave image
2993          7 = /dev/bus/vme/s3 Fourth slave image
2994          8 = /dev/bus/vme/ctl Control
2995
2996        It is expected that all VME bus drivers will use the
2997        same interface. For interface documentation see
2998        http://www.vmelinux.org/.
2999
3000224 char A2232 serial card
3001          0 = /dev/ttyY0 First A2232 port
3002          1 = /dev/ttyY1 Second A2232 port
3003            ...
3004
3005225 char A2232 serial card (alternate devices)
3006          0 = /dev/cuy0 Callout device for ttyY0
3007          1 = /dev/cuy1 Callout device for ttyY1
3008            ...
3009
3010226 char Direct Rendering Infrastructure (DRI)
3011          0 = /dev/dri/card0 First graphics card
3012          1 = /dev/dri/card1 Second graphics card
3013            ...
3014
3015227 char IBM 3270 terminal Unix tty access
3016          1 = /dev/3270/tty1 First 3270 terminal
3017          2 = /dev/3270/tty2 Seconds 3270 terminal
3018            ...
3019
3020228 char IBM 3270 terminal block-mode access
3021          0 = /dev/3270/tub Controlling interface
3022          1 = /dev/3270/tub1 First 3270 terminal
3023          2 = /dev/3270/tub2 Second 3270 terminal
3024            ...
3025
3026229 char IBM iSeries/pSeries virtual console
3027          0 = /dev/hvc0 First console port
3028          1 = /dev/hvc1 Second console port
3029            ...
3030
3031230 char IBM iSeries virtual tape
3032          0 = /dev/iseries/vt0 First virtual tape, mode 0
3033          1 = /dev/iseries/vt1 Second virtual tape, mode 0
3034            ...
3035         32 = /dev/iseries/vt0l First virtual tape, mode 1
3036         33 = /dev/iseries/vt1l Second virtual tape, mode 1
3037            ...
3038         64 = /dev/iseries/vt0m First virtual tape, mode 2
3039         65 = /dev/iseries/vt1m Second virtual tape, mode 2
3040            ...
3041         96 = /dev/iseries/vt0a First virtual tape, mode 3
3042         97 = /dev/iseries/vt1a Second virtual tape, mode 3
3043              ...
3044        128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3045        129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3046            ...
3047        160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3048        161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3049            ...
3050        192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3051        193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3052            ...
3053        224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3054        225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3055            ...
3056
3057        "No rewind" refers to the omission of the default
3058        automatic rewind on device close. The MTREW or MTOFFL
3059        ioctl()'s can be used to rewind the tape regardless of
3060        the device used to access it.
3061
3062231 char InfiniBand
3063        0 = /dev/infiniband/umad0
3064        1 = /dev/infiniband/umad1
3065          ...
3066        63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3067        64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3068        65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3069          ...
3070        127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3071        128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3072        129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3073          ...
3074        159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3075
3076232 char Biometric Devices
3077        0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3078        1 = /dev/biometric/sensor0/iris first iris sensor on first device
3079        2 = /dev/biometric/sensor0/retina first retina sensor on first device
3080        3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3081        4 = /dev/biometric/sensor0/facial first facial sensor on first device
3082        5 = /dev/biometric/sensor0/hand first hand sensor on first device
3083          ...
3084        10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3085          ...
3086        20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3087          ...
3088
3089233 char PathScale InfiniPath interconnect
3090        0 = /dev/ipath Primary device for programs (any unit)
3091        1 = /dev/ipath0 Access specifically to unit 0
3092        2 = /dev/ipath1 Access specifically to unit 1
3093          ...
3094        4 = /dev/ipath3 Access specifically to unit 3
3095        129 = /dev/ipath_sma Device used by Subnet Management Agent
3096        130 = /dev/ipath_diag Device used by diagnostics programs
3097
3098234-239 UNASSIGNED
3099
3100240-254 char LOCAL/EXPERIMENTAL USE
3101
3102240-254 block LOCAL/EXPERIMENTAL USE
3103        Allocated for local/experimental use. For devices not
3104        assigned official numbers, these ranges should be
3105        used in order to avoid conflicting with future assignments.
3106
3107255 char RESERVED
3108
3109255 block RESERVED
3110
3111        This major is reserved to assist the expansion to a
3112        larger number space. No device nodes with this major
3113        should ever be created on the filesystem.
3114        (This is probably not true anymore, but I'll leave it
3115        for now /Torben)
3116
3117---LARGE MAJORS!!!!!---
3118
3119256 char Equinox SST multi-port serial boards
3120           0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3121         127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3122         128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3123          ...
3124        1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3125
3126256 block Resident Flash Disk Flash Translation Layer
3127          0 = /dev/rfda First RFD FTL layer
3128         16 = /dev/rfdb Second RFD FTL layer
3129          ...
3130        240 = /dev/rfdp 16th RFD FTL layer
3131
3132257 char Phoenix Technologies Cryptographic Services Driver
3133          0 = /dev/ptlsec Crypto Services Driver
3134
3135257 block SSFDC Flash Translation Layer filesystem
3136          0 = /dev/ssfdca First SSFDC layer
3137          8 = /dev/ssfdcb Second SSFDC layer
3138         16 = /dev/ssfdcc Third SSFDC layer
3139         24 = /dev/ssfdcd 4th SSFDC layer
3140         32 = /dev/ssfdce 5th SSFDC layer
3141         40 = /dev/ssfdcf 6th SSFDC layer
3142         48 = /dev/ssfdcg 7th SSFDC layer
3143         56 = /dev/ssfdch 8th SSFDC layer
3144
3145258 block ROM/Flash read-only translation layer
3146          0 = /dev/blockrom0 First ROM card's translation layer interface
3147          1 = /dev/blockrom1 Second ROM card's translation layer interface
3148          ...
3149
3150259 block Block Extended Major
3151          Used dynamically to hold additional partition minor
3152          numbers and allow large numbers of partitions per device
3153
3154259 char FPGA configuration interfaces
3155          0 = /dev/icap0 First Xilinx internal configuration
3156          1 = /dev/icap1 Second Xilinx internal configuration
3157
3158260 char OSD (Object-based-device) SCSI Device
3159          0 = /dev/osd0 First OSD Device
3160          1 = /dev/osd1 Second OSD Device
3161          ...
3162          255 = /dev/osd255 256th OSD Device
3163
3164 **** ADDITIONAL /dev DIRECTORY ENTRIES
3165
3166This section details additional entries that should or may exist in
3167the /dev directory. It is preferred that symbolic links use the same
3168form (absolute or relative) as is indicated here. Links are
3169classified as "hard" or "symbolic" depending on the preferred type of
3170link; if possible, the indicated type of link should be used.
3171
3172
3173    Compulsory links
3174
3175These links should exist on all systems:
3176
3177/dev/fd /proc/self/fd symbolic File descriptors
3178/dev/stdin fd/0 symbolic stdin file descriptor
3179/dev/stdout fd/1 symbolic stdout file descriptor
3180/dev/stderr fd/2 symbolic stderr file descriptor
3181/dev/nfsd socksys symbolic Required by iBCS-2
3182/dev/X0R null symbolic Required by iBCS-2
3183
3184Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3185
3186    Recommended links
3187
3188It is recommended that these links exist on all systems:
3189
3190/dev/core /proc/kcore symbolic Backward compatibility
3191/dev/ramdisk ram0 symbolic Backward compatibility
3192/dev/ftape qft0 symbolic Backward compatibility
3193/dev/bttv0 video0 symbolic Backward compatibility
3194/dev/radio radio0 symbolic Backward compatibility
3195/dev/i2o* /dev/i2o/* symbolic Backward compatibility
3196/dev/scd? sr? hard Alternate SCSI CD-ROM name
3197
3198    Locally defined links
3199
3200The following links may be established locally to conform to the
3201configuration of the system. This is merely a tabulation of existing
3202practice, and does not constitute a recommendation. However, if they
3203exist, they should have the following uses.
3204
3205/dev/mouse mouse port symbolic Current mouse device
3206/dev/tape tape device symbolic Current tape device
3207/dev/cdrom CD-ROM device symbolic Current CD-ROM device
3208/dev/cdwriter CD-writer symbolic Current CD-writer device
3209/dev/scanner scanner symbolic Current scanner device
3210/dev/modem modem port symbolic Current dialout device
3211/dev/root root device symbolic Current root filesystem
3212/dev/swap swap device symbolic Current swap device
3213
3214/dev/modem should not be used for a modem which supports dialin as
3215well as dialout, as it tends to cause lock file problems. If it
3216exists, /dev/modem should point to the appropriate primary TTY device
3217(the use of the alternate callout devices is deprecated).
3218
3219For SCSI devices, /dev/tape and /dev/cdrom should point to the
3220``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3221/dev/cdwriter and /dev/scanner should point to the appropriate generic
3222SCSI devices (/dev/sg*).
3223
3224/dev/mouse may point to a primary serial TTY device, a hardware mouse
3225device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3226
3227    Sockets and pipes
3228
3229Non-transient sockets and named pipes may exist in /dev. Common entries are:
3230
3231/dev/printer socket lpd local socket
3232/dev/log socket syslog local socket
3233/dev/gpmdata socket gpm mouse multiplexer
3234
3235    Mount points
3236
3237The following names are reserved for mounting special filesystems
3238under /dev. These special filesystems provide kernel interfaces that
3239cannot be provided with standard device nodes.
3240
3241/dev/pts devpts PTY slave filesystem
3242/dev/shm tmpfs POSIX shared memory maintenance access
3243
3244 **** TERMINAL DEVICES
3245
3246Terminal, or TTY devices are a special class of character devices. A
3247terminal device is any device that could act as a controlling terminal
3248for a session; this includes virtual consoles, serial ports, and
3249pseudoterminals (PTYs).
3250
3251All terminal devices share a common set of capabilities known as line
3252disciplines; these include the common terminal line discipline as well
3253as SLIP and PPP modes.
3254
3255All terminal devices are named similarly; this section explains the
3256naming and use of the various types of TTYs. Note that the naming
3257conventions include several historical warts; some of these are
3258Linux-specific, some were inherited from other systems, and some
3259reflect Linux outgrowing a borrowed convention.
3260
3261A hash mark (#) in a device name is used here to indicate a decimal
3262number without leading zeroes.
3263
3264    Virtual consoles and the console device
3265
3266Virtual consoles are full-screen terminal displays on the system video
3267monitor. Virtual consoles are named /dev/tty#, with numbering
3268starting at /dev/tty1; /dev/tty0 is the current virtual console.
3269/dev/tty0 is the device that should be used to access the system video
3270card on those architectures for which the frame buffer devices
3271(/dev/fb*) are not applicable. Do not use /dev/console
3272for this purpose.
3273
3274The console device, /dev/console, is the device to which system
3275messages should be sent, and on which logins should be permitted in
3276single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3277by the kernel; for previous versions it should be a symbolic link to
3278either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3279a serial port primary (tty*, not cu*) device, depending on the
3280configuration of the system.
3281
3282    Serial ports
3283
3284Serial ports are RS-232 serial ports and any device which simulates
3285one, either in hardware (such as internal modems) or in software (such
3286as the ISDN driver.) Under Linux, each serial ports has two device
3287names, the primary or callin device and the alternate or callout one.
3288Each kind of device is indicated by a different letter. For any
3289letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3290respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3291correspond to /dev/cua# and /dev/cub#. In the future, it should be
3292expected that multiple letters will be used; all letters will be upper
3293case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3294"cu" device (e.g. /dev/cudp#).
3295
3296The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3297
3298The alternate devices provide for kernel-based exclusion and somewhat
3299different defaults than the primary devices. Their main purpose is to
3300allow the use of serial ports with programs with no inherent or broken
3301support for serial ports. Their use is deprecated, and they may be
3302removed from a future version of Linux.
3303
3304Arbitration of serial ports is provided by the use of lock files with
3305the names /var/lock/LCK..ttyX#. The contents of the lock file should
3306be the PID of the locking process as an ASCII number.
3307
3308It is common practice to install links such as /dev/modem
3309which point to serial ports. In order to ensure proper locking in the
3310presence of these links, it is recommended that software chase
3311symlinks and lock all possible names; additionally, it is recommended
3312that a lock file be installed with the corresponding alternate
3313device. In order to avoid deadlocks, it is recommended that the locks
3314are acquired in the following order, and released in the reverse:
3315
3316    1. The symbolic link name, if any (/var/lock/LCK..modem)
3317    2. The "tty" name (/var/lock/LCK..ttyS2)
3318    3. The alternate device name (/var/lock/LCK..cua2)
3319
3320In the case of nested symbolic links, the lock files should be
3321installed in the order the symlinks are resolved.
3322
3323Under no circumstances should an application hold a lock while waiting
3324for another to be released. In addition, applications which attempt
3325to create lock files for the corresponding alternate device names
3326should take into account the possibility of being used on a non-serial
3327port TTY, for which no alternate device would exist.
3328
3329    Pseudoterminals (PTYs)
3330
3331Pseudoterminals, or PTYs, are used to create login sessions or provide
3332other capabilities requiring a TTY line discipline (including SLIP or
3333PPP capability) to arbitrary data-generation processes. Each PTY has
3334a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3335/dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3336allowing each master side to be opened only once.
3337
3338Once the master side has been opened, the corresponding slave device
3339can be used in the same manner as any TTY device. The master and
3340slave devices are connected by the kernel, generating the equivalent
3341of a bidirectional pipe with TTY capabilities.
3342
3343Recent versions of the Linux kernels and GNU libc contain support for
3344the System V/Unix98 naming scheme for PTYs, which assigns a common
3345device, /dev/ptmx, to all the masters (opening it will automatically
3346give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3347for the slaves; the slaves are named with decimal integers (/dev/pts/#
3348in our notation). This removes the problem of exhausting the
3349namespace and enables the kernel to automatically create the device
3350nodes for the slaves on demand using the "devpts" filesystem.
3351
3352

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