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17The LaTeX version of this document is no longer maintained.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26The symbol {2.6} means the allocation is obsolete and scheduled for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, reads
102                    export the buffered printk records.
103         12 = /dev/oldmem Used by crashdump kernels to access
104                    the memory of the kernel that crashed.
105
106  1 block RAM disk
107          0 = /dev/ram0 First RAM disk
108          1 = /dev/ram1 Second RAM disk
109            ...
110        250 = /dev/initrd Initial RAM disk
111
112        Older kernels had /dev/ramdisk (1, 1) here.
113        /dev/initrd refers to a RAM disk which was preloaded
114        by the boot loader; newer kernels use /dev/ram0 for
115        the initrd.
116
117  2 char Pseudo-TTY masters
118          0 = /dev/ptyp0 First PTY master
119          1 = /dev/ptyp1 Second PTY master
120            ...
121        255 = /dev/ptyef 256th PTY master
122
123        Pseudo-tty's are named as follows:
124        * Masters are "pty", slaves are "tty";
125        * the fourth letter is one of pqrstuvwxyzabcde indicating
126          the 1st through 16th series of 16 pseudo-ttys each, and
127        * the fifth letter is one of 0123456789abcdef indicating
128          the position within the series.
129
130        These are the old-style (BSD) PTY devices; Unix98
131        devices are on major 128 and above and use the PTY
132        master multiplex (/dev/ptmx) to acquire a PTY on
133        demand.
134
135  2 block Floppy disks
136          0 = /dev/fd0 Controller 0, drive 0, autodetect
137          1 = /dev/fd1 Controller 0, drive 1, autodetect
138          2 = /dev/fd2 Controller 0, drive 2, autodetect
139          3 = /dev/fd3 Controller 0, drive 3, autodetect
140        128 = /dev/fd4 Controller 1, drive 0, autodetect
141        129 = /dev/fd5 Controller 1, drive 1, autodetect
142        130 = /dev/fd6 Controller 1, drive 2, autodetect
143        131 = /dev/fd7 Controller 1, drive 3, autodetect
144
145        To specify format, add to the autodetect device number:
146          0 = /dev/fd? Autodetect format
147          4 = /dev/fd?d360 5.25" 360K in a 360K drive(1)
148         20 = /dev/fd?h360 5.25" 360K in a 1200K drive(1)
149         48 = /dev/fd?h410 5.25" 410K in a 1200K drive
150         64 = /dev/fd?h420 5.25" 420K in a 1200K drive
151         24 = /dev/fd?h720 5.25" 720K in a 1200K drive
152         80 = /dev/fd?h880 5.25" 880K in a 1200K drive(1)
153          8 = /dev/fd?h1200 5.25" 1200K in a 1200K drive(1)
154         40 = /dev/fd?h1440 5.25" 1440K in a 1200K drive(1)
155         56 = /dev/fd?h1476 5.25" 1476K in a 1200K drive
156         72 = /dev/fd?h1494 5.25" 1494K in a 1200K drive
157         92 = /dev/fd?h1600 5.25" 1600K in a 1200K drive(1)
158
159         12 = /dev/fd?u360 3.5" 360K Double Density(2)
160         16 = /dev/fd?u720 3.5" 720K Double Density(1)
161        120 = /dev/fd?u800 3.5" 800K Double Density(2)
162         52 = /dev/fd?u820 3.5" 820K Double Density
163         68 = /dev/fd?u830 3.5" 830K Double Density
164         84 = /dev/fd?u1040 3.5" 1040K Double Density(1)
165         88 = /dev/fd?u1120 3.5" 1120K Double Density(1)
166         28 = /dev/fd?u1440 3.5" 1440K High Density(1)
167        124 = /dev/fd?u1600 3.5" 1600K High Density(1)
168         44 = /dev/fd?u1680 3.5" 1680K High Density(3)
169         60 = /dev/fd?u1722 3.5" 1722K High Density
170         76 = /dev/fd?u1743 3.5" 1743K High Density
171         96 = /dev/fd?u1760 3.5" 1760K High Density
172        116 = /dev/fd?u1840 3.5" 1840K High Density(3)
173        100 = /dev/fd?u1920 3.5" 1920K High Density(1)
174         32 = /dev/fd?u2880 3.5" 2880K Extra Density(1)
175        104 = /dev/fd?u3200 3.5" 3200K Extra Density
176        108 = /dev/fd?u3520 3.5" 3520K Extra Density
177        112 = /dev/fd?u3840 3.5" 3840K Extra Density(1)
178
179         36 = /dev/fd?CompaQ Compaq 2880K drive; obsolete?
180
181        (1) Autodetectable format
182        (2) Autodetectable format in a Double Density (720K) drive only
183        (3) Autodetectable format in a High Density (1440K) drive only
184
185        NOTE: The letter in the device name (d, q, h or u)
186        signifies the type of drive: 5.25" Double Density (d),
187        5.25" Quad Density (q), 5.25" High Density (h) or 3.5"
188        (any model, u). The use of the capital letters D, H
189        and E for the 3.5" models have been deprecated, since
190        the drive type is insignificant for these devices.
191
192  3 char Pseudo-TTY slaves
193          0 = /dev/ttyp0 First PTY slave
194          1 = /dev/ttyp1 Second PTY slave
195            ...
196        255 = /dev/ttyef 256th PTY slave
197
198        These are the old-style (BSD) PTY devices; Unix98
199        devices are on major 136 and above.
200
201  3 block First MFM, RLL and IDE hard disk/CD-ROM interface
202          0 = /dev/hda Master: whole disk (or CD-ROM)
203         64 = /dev/hdb Slave: whole disk (or CD-ROM)
204
205        For partitions, add to the whole disk device number:
206          0 = /dev/hd? Whole disk
207          1 = /dev/hd?1 First partition
208          2 = /dev/hd?2 Second partition
209            ...
210         63 = /dev/hd?63 63rd partition
211
212        For Linux/i386, partitions 1-4 are the primary
213        partitions, and 5 and above are logical partitions.
214        Other versions of Linux use partitioning schemes
215        appropriate to their respective architectures.
216
217  4 char TTY devices
218          0 = /dev/tty0 Current virtual console
219
220          1 = /dev/tty1 First virtual console
221            ...
222         63 = /dev/tty63 63rd virtual console
223         64 = /dev/ttyS0 First UART serial port
224            ...
225        255 = /dev/ttyS191 192nd UART serial port
226
227        UART serial ports refer to 8250/16450/16550 series devices.
228
229        Older versions of the Linux kernel used this major
230        number for BSD PTY devices. As of Linux 2.1.115, this
231        is no longer supported. Use major numbers 2 and 3.
232
233  4 block Aliases for dynamically allocated major devices to be used
234        when its not possible to create the real device nodes
235        because the root filesystem is mounted read-only.
236
237                  0 = /dev/root
238
239  5 char Alternate TTY devices
240          0 = /dev/tty Current TTY device
241          1 = /dev/console System console
242          2 = /dev/ptmx PTY master multiplex
243          3 = /dev/ttyprintk User messages via printk TTY device
244         64 = /dev/cua0 Callout device for ttyS0
245            ...
246        255 = /dev/cua191 Callout device for ttyS191
247
248        (5,1) is /dev/console starting with Linux 2.1.71. See
249        the section on terminal devices for more information
250        on /dev/console.
251
252  6 char Parallel printer devices
253          0 = /dev/lp0 Parallel printer on parport0
254          1 = /dev/lp1 Parallel printer on parport1
255            ...
256
257        Current Linux kernels no longer have a fixed mapping
258        between parallel ports and I/O addresses. Instead,
259        they are redirected through the parport multiplex layer.
260
261  7 char Virtual console capture devices
262          0 = /dev/vcs Current vc text contents
263          1 = /dev/vcs1 tty1 text contents
264            ...
265         63 = /dev/vcs63 tty63 text contents
266        128 = /dev/vcsa Current vc text/attribute contents
267        129 = /dev/vcsa1 tty1 text/attribute contents
268            ...
269        191 = /dev/vcsa63 tty63 text/attribute contents
270
271        NOTE: These devices permit both read and write access.
272
273  7 block Loopback devices
274          0 = /dev/loop0 First loop device
275          1 = /dev/loop1 Second loop device
276            ...
277
278        The loop devices are used to mount filesystems not
279        associated with block devices. The binding to the
280        loop devices is handled by mount(8) or losetup(8).
281
282  8 block SCSI disk devices (0-15)
283          0 = /dev/sda First SCSI disk whole disk
284         16 = /dev/sdb Second SCSI disk whole disk
285         32 = /dev/sdc Third SCSI disk whole disk
286            ...
287        240 = /dev/sdp Sixteenth SCSI disk whole disk
288
289        Partitions are handled in the same way as for IDE
290        disks (see major number 3) except that the limit on
291        partitions is 15.
292
293  9 char SCSI tape devices
294          0 = /dev/st0 First SCSI tape, mode 0
295          1 = /dev/st1 Second SCSI tape, mode 0
296            ...
297         32 = /dev/st0l First SCSI tape, mode 1
298         33 = /dev/st1l Second SCSI tape, mode 1
299            ...
300         64 = /dev/st0m First SCSI tape, mode 2
301         65 = /dev/st1m Second SCSI tape, mode 2
302            ...
303         96 = /dev/st0a First SCSI tape, mode 3
304         97 = /dev/st1a Second SCSI tape, mode 3
305              ...
306        128 = /dev/nst0 First SCSI tape, mode 0, no rewind
307        129 = /dev/nst1 Second SCSI tape, mode 0, no rewind
308            ...
309        160 = /dev/nst0l First SCSI tape, mode 1, no rewind
310        161 = /dev/nst1l Second SCSI tape, mode 1, no rewind
311            ...
312        192 = /dev/nst0m First SCSI tape, mode 2, no rewind
313        193 = /dev/nst1m Second SCSI tape, mode 2, no rewind
314            ...
315        224 = /dev/nst0a First SCSI tape, mode 3, no rewind
316        225 = /dev/nst1a Second SCSI tape, mode 3, no rewind
317            ...
318
319        "No rewind" refers to the omission of the default
320        automatic rewind on device close. The MTREW or MTOFFL
321        ioctl()'s can be used to rewind the tape regardless of
322        the device used to access it.
323
324  9 block Metadisk (RAID) devices
325          0 = /dev/md0 First metadisk group
326          1 = /dev/md1 Second metadisk group
327            ...
328
329        The metadisk driver is used to span a
330        filesystem across multiple physical disks.
331
332 10 char Non-serial mice, misc features
333          0 = /dev/logibm Logitech bus mouse
334          1 = /dev/psaux PS/2-style mouse port
335          2 = /dev/inportbm Microsoft Inport bus mouse
336          3 = /dev/atibm ATI XL bus mouse
337          4 = /dev/jbm J-mouse
338          4 = /dev/amigamouse Amiga mouse (68k/Amiga)
339          5 = /dev/atarimouse Atari mouse
340          6 = /dev/sunmouse Sun mouse
341          7 = /dev/amigamouse1 Second Amiga mouse
342          8 = /dev/smouse Simple serial mouse driver
343          9 = /dev/pc110pad IBM PC-110 digitizer pad
344         10 = /dev/adbmouse Apple Desktop Bus mouse
345         11 = /dev/vrtpanel Vr41xx embedded touch panel
346         13 = /dev/vpcmouse Connectix Virtual PC Mouse
347         14 = /dev/touchscreen/ucb1x00 UCB 1x00 touchscreen
348         15 = /dev/touchscreen/mk712 MK712 touchscreen
349        128 = /dev/beep Fancy beep device
350        129 =
351        130 = /dev/watchdog Watchdog timer port
352        131 = /dev/temperature Machine internal temperature
353        132 = /dev/hwtrap Hardware fault trap
354        133 = /dev/exttrp External device trap
355        134 = /dev/apm_bios Advanced Power Management BIOS
356        135 = /dev/rtc Real Time Clock
357        139 = /dev/openprom SPARC OpenBoot PROM
358        140 = /dev/relay8 Berkshire Products Octal relay card
359        141 = /dev/relay16 Berkshire Products ISO-16 relay card
360        142 =
361        143 = /dev/pciconf PCI configuration space
362        144 = /dev/nvram Non-volatile configuration RAM
363        145 = /dev/hfmodem Soundcard shortwave modem control
364        146 = /dev/graphics Linux/SGI graphics device
365        147 = /dev/opengl Linux/SGI OpenGL pipe
366        148 = /dev/gfx Linux/SGI graphics effects device
367        149 = /dev/input/mouse Linux/SGI Irix emulation mouse
368        150 = /dev/input/keyboard Linux/SGI Irix emulation keyboard
369        151 = /dev/led Front panel LEDs
370        152 = /dev/kpoll Kernel Poll Driver
371        153 = /dev/mergemem Memory merge device
372        154 = /dev/pmu Macintosh PowerBook power manager
373        155 = /dev/isictl MultiTech ISICom serial control
374        156 = /dev/lcd Front panel LCD display
375        157 = /dev/ac Applicom Intl Profibus card
376        158 = /dev/nwbutton Netwinder external button
377        159 = /dev/nwdebug Netwinder debug interface
378        160 = /dev/nwflash Netwinder flash memory
379        161 = /dev/userdma User-space DMA access
380        162 = /dev/smbus System Management Bus
381        163 = /dev/lik Logitech Internet Keyboard
382        164 = /dev/ipmo Intel Intelligent Platform Management
383        165 = /dev/vmmon VMware virtual machine monitor
384        166 = /dev/i2o/ctl I2O configuration manager
385        167 = /dev/specialix_sxctl Specialix serial control
386        168 = /dev/tcldrv Technology Concepts serial control
387        169 = /dev/specialix_rioctl Specialix RIO serial control
388        170 = /dev/thinkpad/thinkpad IBM Thinkpad devices
389        171 = /dev/srripc QNX4 API IPC manager
390        172 = /dev/usemaclone Semaphore clone device
391        173 = /dev/ipmikcs Intelligent Platform Management
392        174 = /dev/uctrl SPARCbook 3 microcontroller
393        175 = /dev/agpgart AGP Graphics Address Remapping Table
394        176 = /dev/gtrsc Gorgy Timing radio clock
395        177 = /dev/cbm Serial CBM bus
396        178 = /dev/jsflash JavaStation OS flash SIMM
397        179 = /dev/xsvc High-speed shared-mem/semaphore service
398        180 = /dev/vrbuttons Vr41xx button input device
399        181 = /dev/toshiba Toshiba laptop SMM support
400        182 = /dev/perfctr Performance-monitoring counters
401        183 = /dev/hwrng Generic random number generator
402        184 = /dev/cpu/microcode CPU microcode update interface
403        186 = /dev/atomicps Atomic shapshot of process state data
404        187 = /dev/irnet IrNET device
405        188 = /dev/smbusbios SMBus BIOS
406        189 = /dev/ussp_ctl User space serial port control
407        190 = /dev/crash Mission Critical Linux crash dump facility
408        191 = /dev/pcl181 <information missing>
409        192 = /dev/nas_xbus NAS xbus LCD/buttons access
410        193 = /dev/d7s SPARC 7-segment display
411        194 = /dev/zkshim Zero-Knowledge network shim control
412        195 = /dev/elographics/e2201 Elographics touchscreen E271-2201
413        198 = /dev/sexec Signed executable interface
414        199 = /dev/scanners/cuecat :CueCat barcode scanner
415        200 = /dev/net/tun TAP/TUN network device
416        201 = /dev/button/gulpb Transmeta GULP-B buttons
417        202 = /dev/emd/ctl Enhanced Metadisk RAID (EMD) control
418        204 = /dev/video/em8300 EM8300 DVD decoder control
419        205 = /dev/video/em8300_mv EM8300 DVD decoder video
420        206 = /dev/video/em8300_ma EM8300 DVD decoder audio
421        207 = /dev/video/em8300_sp EM8300 DVD decoder subpicture
422        208 = /dev/compaq/cpqphpc Compaq PCI Hot Plug Controller
423        209 = /dev/compaq/cpqrid Compaq Remote Insight Driver
424        210 = /dev/impi/bt IMPI coprocessor block transfer
425        211 = /dev/impi/smic IMPI coprocessor stream interface
426        212 = /dev/watchdogs/0 First watchdog device
427        213 = /dev/watchdogs/1 Second watchdog device
428        214 = /dev/watchdogs/2 Third watchdog device
429        215 = /dev/watchdogs/3 Fourth watchdog device
430        216 = /dev/fujitsu/apanel Fujitsu/Siemens application panel
431        217 = /dev/ni/natmotn National Instruments Motion
432        218 = /dev/kchuid Inter-process chuid control
433        219 = /dev/modems/mwave MWave modem firmware upload
434        220 = /dev/mptctl Message passing technology (MPT) control
435        221 = /dev/mvista/hssdsi Montavista PICMG hot swap system driver
436        222 = /dev/mvista/hasi Montavista PICMG high availability
437        223 = /dev/input/uinput User level driver support for input
438        224 = /dev/tpm TCPA TPM driver
439        225 = /dev/pps Pulse Per Second driver
440        226 = /dev/systrace Systrace device
441        227 = /dev/mcelog X86_64 Machine Check Exception driver
442        228 = /dev/hpet HPET driver
443        229 = /dev/fuse Fuse (virtual filesystem in user-space)
444        230 = /dev/midishare MidiShare driver
445        231 = /dev/snapshot System memory snapshot device
446        232 = /dev/kvm Kernel-based virtual machine (hardware virtualization extensions)
447        233 = /dev/kmview View-OS A process with a view
448        234 = /dev/btrfs-control Btrfs control device
449        235 = /dev/autofs Autofs control device
450        236 = /dev/mapper/control Device-Mapper control device
451        237 = /dev/loop-control Loopback control device
452        238 = /dev/vhost-net Host kernel accelerator for virtio net
453
454        240-254 Reserved for local use
455        255 Reserved for MISC_DYNAMIC_MINOR
456
457 11 char Raw keyboard device (Linux/SPARC only)
458          0 = /dev/kbd Raw keyboard device
459
460 11 char Serial Mux device (Linux/PA-RISC only)
461          0 = /dev/ttyB0 First mux port
462          1 = /dev/ttyB1 Second mux port
463            ...
464
465 11 block SCSI CD-ROM devices
466          0 = /dev/scd0 First SCSI CD-ROM
467          1 = /dev/scd1 Second SCSI CD-ROM
468            ...
469
470        The prefix /dev/sr (instead of /dev/scd) has been deprecated.
471
472 12 char QIC-02 tape
473          2 = /dev/ntpqic11 QIC-11, no rewind-on-close
474          3 = /dev/tpqic11 QIC-11, rewind-on-close
475          4 = /dev/ntpqic24 QIC-24, no rewind-on-close
476          5 = /dev/tpqic24 QIC-24, rewind-on-close
477          6 = /dev/ntpqic120 QIC-120, no rewind-on-close
478          7 = /dev/tpqic120 QIC-120, rewind-on-close
479          8 = /dev/ntpqic150 QIC-150, no rewind-on-close
480          9 = /dev/tpqic150 QIC-150, rewind-on-close
481
482        The device names specified are proposed -- if there
483        are "standard" names for these devices, please let me know.
484
485 12 block
486
487 13 char Input core
488          0 = /dev/input/js0 First joystick
489          1 = /dev/input/js1 Second joystick
490            ...
491         32 = /dev/input/mouse0 First mouse
492         33 = /dev/input/mouse1 Second mouse
493            ...
494         63 = /dev/input/mice Unified mouse
495         64 = /dev/input/event0 First event queue
496         65 = /dev/input/event1 Second event queue
497            ...
498
499        Each device type has 5 bits (32 minors).
500
501 13 block 8-bit MFM/RLL/IDE controller
502          0 = /dev/xda First XT disk whole disk
503         64 = /dev/xdb Second XT disk whole disk
504
505        Partitions are handled in the same way as IDE disks
506        (see major number 3).
507
508 14 char Open Sound System (OSS)
509          0 = /dev/mixer Mixer control
510          1 = /dev/sequencer Audio sequencer
511          2 = /dev/midi00 First MIDI port
512          3 = /dev/dsp Digital audio
513          4 = /dev/audio Sun-compatible digital audio
514          6 =
515          7 = /dev/audioctl SPARC audio control device
516          8 = /dev/sequencer2 Sequencer -- alternate device
517         16 = /dev/mixer1 Second soundcard mixer control
518         17 = /dev/patmgr0 Sequencer patch manager
519         18 = /dev/midi01 Second MIDI port
520         19 = /dev/dsp1 Second soundcard digital audio
521         20 = /dev/audio1 Second soundcard Sun digital audio
522         33 = /dev/patmgr1 Sequencer patch manager
523         34 = /dev/midi02 Third MIDI port
524         50 = /dev/midi03 Fourth MIDI port
525
526 14 block
527
528 15 char Joystick
529          0 = /dev/js0 First analog joystick
530          1 = /dev/js1 Second analog joystick
531            ...
532        128 = /dev/djs0 First digital joystick
533        129 = /dev/djs1 Second digital joystick
534            ...
535 15 block Sony CDU-31A/CDU-33A CD-ROM
536          0 = /dev/sonycd Sony CDU-31a CD-ROM
537
538 16 char Non-SCSI scanners
539          0 = /dev/gs4500 Genius 4500 handheld scanner
540
541 16 block GoldStar CD-ROM
542          0 = /dev/gscd GoldStar CD-ROM
543
544 17 char OBSOLETE (was Chase serial card)
545          0 = /dev/ttyH0 First Chase port
546          1 = /dev/ttyH1 Second Chase port
547            ...
548 17 block Optics Storage CD-ROM
549          0 = /dev/optcd Optics Storage CD-ROM
550
551 18 char OBSOLETE (was Chase serial card - alternate devices)
552          0 = /dev/cuh0 Callout device for ttyH0
553          1 = /dev/cuh1 Callout device for ttyH1
554            ...
555 18 block Sanyo CD-ROM
556          0 = /dev/sjcd Sanyo CD-ROM
557
558 19 char Cyclades serial card
559          0 = /dev/ttyC0 First Cyclades port
560            ...
561         31 = /dev/ttyC31 32nd Cyclades port
562
563 19 block "Double" compressed disk
564          0 = /dev/double0 First compressed disk
565            ...
566          7 = /dev/double7 Eighth compressed disk
567        128 = /dev/cdouble0 Mirror of first compressed disk
568            ...
569        135 = /dev/cdouble7 Mirror of eighth compressed disk
570
571        See the Double documentation for the meaning of the
572        mirror devices.
573
574 20 char Cyclades serial card - alternate devices
575          0 = /dev/cub0 Callout device for ttyC0
576            ...
577         31 = /dev/cub31 Callout device for ttyC31
578
579 20 block Hitachi CD-ROM (under development)
580          0 = /dev/hitcd Hitachi CD-ROM
581
582 21 char Generic SCSI access
583          0 = /dev/sg0 First generic SCSI device
584          1 = /dev/sg1 Second generic SCSI device
585            ...
586
587        Most distributions name these /dev/sga, /dev/sgb...;
588        this sets an unnecessary limit of 26 SCSI devices in
589        the system and is counter to standard Linux
590        device-naming practice.
591
592 21 block Acorn MFM hard drive interface
593          0 = /dev/mfma First MFM drive whole disk
594         64 = /dev/mfmb Second MFM drive whole disk
595
596        This device is used on the ARM-based Acorn RiscPC.
597        Partitions are handled the same way as for IDE disks
598        (see major number 3).
599
600 22 char Digiboard serial card
601          0 = /dev/ttyD0 First Digiboard port
602          1 = /dev/ttyD1 Second Digiboard port
603            ...
604 22 block Second IDE hard disk/CD-ROM interface
605          0 = /dev/hdc Master: whole disk (or CD-ROM)
606         64 = /dev/hdd Slave: whole disk (or CD-ROM)
607
608        Partitions are handled the same way as for the first
609        interface (see major number 3).
610
611 23 char Digiboard serial card - alternate devices
612          0 = /dev/cud0 Callout device for ttyD0
613          1 = /dev/cud1 Callout device for ttyD1
614              ...
615 23 block Mitsumi proprietary CD-ROM
616          0 = /dev/mcd Mitsumi CD-ROM
617
618 24 char Stallion serial card
619          0 = /dev/ttyE0 Stallion port 0 card 0
620          1 = /dev/ttyE1 Stallion port 1 card 0
621            ...
622         64 = /dev/ttyE64 Stallion port 0 card 1
623         65 = /dev/ttyE65 Stallion port 1 card 1
624              ...
625        128 = /dev/ttyE128 Stallion port 0 card 2
626        129 = /dev/ttyE129 Stallion port 1 card 2
627            ...
628        192 = /dev/ttyE192 Stallion port 0 card 3
629        193 = /dev/ttyE193 Stallion port 1 card 3
630            ...
631 24 block Sony CDU-535 CD-ROM
632          0 = /dev/cdu535 Sony CDU-535 CD-ROM
633
634 25 char Stallion serial card - alternate devices
635          0 = /dev/cue0 Callout device for ttyE0
636          1 = /dev/cue1 Callout device for ttyE1
637            ...
638         64 = /dev/cue64 Callout device for ttyE64
639         65 = /dev/cue65 Callout device for ttyE65
640            ...
641        128 = /dev/cue128 Callout device for ttyE128
642        129 = /dev/cue129 Callout device for ttyE129
643            ...
644        192 = /dev/cue192 Callout device for ttyE192
645        193 = /dev/cue193 Callout device for ttyE193
646              ...
647 25 block First Matsushita (Panasonic/SoundBlaster) CD-ROM
648          0 = /dev/sbpcd0 Panasonic CD-ROM controller 0 unit 0
649          1 = /dev/sbpcd1 Panasonic CD-ROM controller 0 unit 1
650          2 = /dev/sbpcd2 Panasonic CD-ROM controller 0 unit 2
651          3 = /dev/sbpcd3 Panasonic CD-ROM controller 0 unit 3
652
653 26 char
654
655 26 block Second Matsushita (Panasonic/SoundBlaster) CD-ROM
656          0 = /dev/sbpcd4 Panasonic CD-ROM controller 1 unit 0
657          1 = /dev/sbpcd5 Panasonic CD-ROM controller 1 unit 1
658          2 = /dev/sbpcd6 Panasonic CD-ROM controller 1 unit 2
659          3 = /dev/sbpcd7 Panasonic CD-ROM controller 1 unit 3
660
661 27 char QIC-117 tape
662          0 = /dev/qft0 Unit 0, rewind-on-close
663          1 = /dev/qft1 Unit 1, rewind-on-close
664          2 = /dev/qft2 Unit 2, rewind-on-close
665          3 = /dev/qft3 Unit 3, rewind-on-close
666          4 = /dev/nqft0 Unit 0, no rewind-on-close
667          5 = /dev/nqft1 Unit 1, no rewind-on-close
668          6 = /dev/nqft2 Unit 2, no rewind-on-close
669          7 = /dev/nqft3 Unit 3, no rewind-on-close
670         16 = /dev/zqft0 Unit 0, rewind-on-close, compression
671         17 = /dev/zqft1 Unit 1, rewind-on-close, compression
672         18 = /dev/zqft2 Unit 2, rewind-on-close, compression
673         19 = /dev/zqft3 Unit 3, rewind-on-close, compression
674         20 = /dev/nzqft0 Unit 0, no rewind-on-close, compression
675         21 = /dev/nzqft1 Unit 1, no rewind-on-close, compression
676         22 = /dev/nzqft2 Unit 2, no rewind-on-close, compression
677         23 = /dev/nzqft3 Unit 3, no rewind-on-close, compression
678         32 = /dev/rawqft0 Unit 0, rewind-on-close, no file marks
679         33 = /dev/rawqft1 Unit 1, rewind-on-close, no file marks
680         34 = /dev/rawqft2 Unit 2, rewind-on-close, no file marks
681         35 = /dev/rawqft3 Unit 3, rewind-on-close, no file marks
682         36 = /dev/nrawqft0 Unit 0, no rewind-on-close, no file marks
683         37 = /dev/nrawqft1 Unit 1, no rewind-on-close, no file marks
684         38 = /dev/nrawqft2 Unit 2, no rewind-on-close, no file marks
685         39 = /dev/nrawqft3 Unit 3, no rewind-on-close, no file marks
686
687 27 block Third Matsushita (Panasonic/SoundBlaster) CD-ROM
688          0 = /dev/sbpcd8 Panasonic CD-ROM controller 2 unit 0
689          1 = /dev/sbpcd9 Panasonic CD-ROM controller 2 unit 1
690          2 = /dev/sbpcd10 Panasonic CD-ROM controller 2 unit 2
691          3 = /dev/sbpcd11 Panasonic CD-ROM controller 2 unit 3
692
693 28 char Stallion serial card - card programming
694          0 = /dev/staliomem0 First Stallion card I/O memory
695          1 = /dev/staliomem1 Second Stallion card I/O memory
696          2 = /dev/staliomem2 Third Stallion card I/O memory
697          3 = /dev/staliomem3 Fourth Stallion card I/O memory
698
699 28 char Atari SLM ACSI laser printer (68k/Atari)
700          0 = /dev/slm0 First SLM laser printer
701          1 = /dev/slm1 Second SLM laser printer
702            ...
703 28 block Fourth Matsushita (Panasonic/SoundBlaster) CD-ROM
704          0 = /dev/sbpcd12 Panasonic CD-ROM controller 3 unit 0
705          1 = /dev/sbpcd13 Panasonic CD-ROM controller 3 unit 1
706          2 = /dev/sbpcd14 Panasonic CD-ROM controller 3 unit 2
707          3 = /dev/sbpcd15 Panasonic CD-ROM controller 3 unit 3
708
709 28 block ACSI disk (68k/Atari)
710          0 = /dev/ada First ACSI disk whole disk
711         16 = /dev/adb Second ACSI disk whole disk
712         32 = /dev/adc Third ACSI disk whole disk
713            ...
714        240 = /dev/adp 16th ACSI disk whole disk
715
716        Partitions are handled in the same way as for IDE
717        disks (see major number 3) except that the limit on
718        partitions is 15, like SCSI.
719
720 29 char Universal frame buffer
721          0 = /dev/fb0 First frame buffer
722          1 = /dev/fb1 Second frame buffer
723            ...
724         31 = /dev/fb31 32nd frame buffer
725
726 29 block Aztech/Orchid/Okano/Wearnes CD-ROM
727          0 = /dev/aztcd Aztech CD-ROM
728
729 30 char iBCS-2 compatibility devices
730          0 = /dev/socksys Socket access
731          1 = /dev/spx SVR3 local X interface
732         32 = /dev/inet/ip Network access
733         33 = /dev/inet/icmp
734         34 = /dev/inet/ggp
735         35 = /dev/inet/ipip
736         36 = /dev/inet/tcp
737         37 = /dev/inet/egp
738         38 = /dev/inet/pup
739         39 = /dev/inet/udp
740         40 = /dev/inet/idp
741         41 = /dev/inet/rawip
742
743        Additionally, iBCS-2 requires the following links:
744
745        /dev/ip -> /dev/inet/ip
746        /dev/icmp -> /dev/inet/icmp
747        /dev/ggp -> /dev/inet/ggp
748        /dev/ipip -> /dev/inet/ipip
749        /dev/tcp -> /dev/inet/tcp
750        /dev/egp -> /dev/inet/egp
751        /dev/pup -> /dev/inet/pup
752        /dev/udp -> /dev/inet/udp
753        /dev/idp -> /dev/inet/idp
754        /dev/rawip -> /dev/inet/rawip
755        /dev/inet/arp -> /dev/inet/udp
756        /dev/inet/rip -> /dev/inet/udp
757        /dev/nfsd -> /dev/socksys
758        /dev/X0R -> /dev/null (? apparently not required ?)
759
760 30 block Philips LMS CM-205 CD-ROM
761          0 = /dev/cm205cd Philips LMS CM-205 CD-ROM
762
763        /dev/lmscd is an older name for this device. This
764        driver does not work with the CM-205MS CD-ROM.
765
766 31 char MPU-401 MIDI
767          0 = /dev/mpu401data MPU-401 data port
768          1 = /dev/mpu401stat MPU-401 status port
769
770 31 block ROM/flash memory card
771          0 = /dev/rom0 First ROM card (rw)
772              ...
773          7 = /dev/rom7 Eighth ROM card (rw)
774          8 = /dev/rrom0 First ROM card (ro)
775            ...
776         15 = /dev/rrom7 Eighth ROM card (ro)
777         16 = /dev/flash0 First flash memory card (rw)
778            ...
779         23 = /dev/flash7 Eighth flash memory card (rw)
780         24 = /dev/rflash0 First flash memory card (ro)
781            ...
782         31 = /dev/rflash7 Eighth flash memory card (ro)
783
784        The read-write (rw) devices support back-caching
785        written data in RAM, as well as writing to flash RAM
786        devices. The read-only devices (ro) support reading
787        only.
788
789 32 char Specialix serial card
790          0 = /dev/ttyX0 First Specialix port
791          1 = /dev/ttyX1 Second Specialix port
792            ...
793 32 block Philips LMS CM-206 CD-ROM
794          0 = /dev/cm206cd Philips LMS CM-206 CD-ROM
795
796 33 char Specialix serial card - alternate devices
797          0 = /dev/cux0 Callout device for ttyX0
798          1 = /dev/cux1 Callout device for ttyX1
799            ...
800 33 block Third IDE hard disk/CD-ROM interface
801          0 = /dev/hde Master: whole disk (or CD-ROM)
802         64 = /dev/hdf Slave: whole disk (or CD-ROM)
803
804        Partitions are handled the same way as for the first
805        interface (see major number 3).
806
807 34 char Z8530 HDLC driver
808          0 = /dev/scc0 First Z8530, first port
809          1 = /dev/scc1 First Z8530, second port
810          2 = /dev/scc2 Second Z8530, first port
811          3 = /dev/scc3 Second Z8530, second port
812            ...
813
814        In a previous version these devices were named
815        /dev/sc1 for /dev/scc0, /dev/sc2 for /dev/scc1, and so
816        on.
817
818 34 block Fourth IDE hard disk/CD-ROM interface
819          0 = /dev/hdg Master: whole disk (or CD-ROM)
820         64 = /dev/hdh Slave: whole disk (or CD-ROM)
821
822        Partitions are handled the same way as for the first
823        interface (see major number 3).
824
825 35 char tclmidi MIDI driver
826          0 = /dev/midi0 First MIDI port, kernel timed
827          1 = /dev/midi1 Second MIDI port, kernel timed
828          2 = /dev/midi2 Third MIDI port, kernel timed
829          3 = /dev/midi3 Fourth MIDI port, kernel timed
830         64 = /dev/rmidi0 First MIDI port, untimed
831         65 = /dev/rmidi1 Second MIDI port, untimed
832         66 = /dev/rmidi2 Third MIDI port, untimed
833         67 = /dev/rmidi3 Fourth MIDI port, untimed
834        128 = /dev/smpte0 First MIDI port, SMPTE timed
835        129 = /dev/smpte1 Second MIDI port, SMPTE timed
836        130 = /dev/smpte2 Third MIDI port, SMPTE timed
837        131 = /dev/smpte3 Fourth MIDI port, SMPTE timed
838
839 35 block Slow memory ramdisk
840          0 = /dev/slram Slow memory ramdisk
841
842 36 char Netlink support
843          0 = /dev/route Routing, device updates, kernel to user
844          1 = /dev/skip enSKIP security cache control
845          3 = /dev/fwmonitor Firewall packet copies
846         16 = /dev/tap0 First Ethertap device
847            ...
848         31 = /dev/tap15 16th Ethertap device
849
850 36 block OBSOLETE (was MCA ESDI hard disk)
851
852 37 char IDE tape
853          0 = /dev/ht0 First IDE tape
854          1 = /dev/ht1 Second IDE tape
855            ...
856        128 = /dev/nht0 First IDE tape, no rewind-on-close
857        129 = /dev/nht1 Second IDE tape, no rewind-on-close
858            ...
859
860        Currently, only one IDE tape drive is supported.
861
862 37 block Zorro II ramdisk
863          0 = /dev/z2ram Zorro II ramdisk
864
865 38 char Myricom PCI Myrinet board
866          0 = /dev/mlanai0 First Myrinet board
867          1 = /dev/mlanai1 Second Myrinet board
868            ...
869
870        This device is used for status query, board control
871        and "user level packet I/O." This board is also
872        accessible as a standard networking "eth" device.
873
874 38 block OBSOLETE (was Linux/AP+)
875
876 39 char ML-16P experimental I/O board
877          0 = /dev/ml16pa-a0 First card, first analog channel
878          1 = /dev/ml16pa-a1 First card, second analog channel
879            ...
880         15 = /dev/ml16pa-a15 First card, 16th analog channel
881         16 = /dev/ml16pa-d First card, digital lines
882         17 = /dev/ml16pa-c0 First card, first counter/timer
883         18 = /dev/ml16pa-c1 First card, second counter/timer
884         19 = /dev/ml16pa-c2 First card, third counter/timer
885         32 = /dev/ml16pb-a0 Second card, first analog channel
886         33 = /dev/ml16pb-a1 Second card, second analog channel
887            ...
888         47 = /dev/ml16pb-a15 Second card, 16th analog channel
889         48 = /dev/ml16pb-d Second card, digital lines
890         49 = /dev/ml16pb-c0 Second card, first counter/timer
891         50 = /dev/ml16pb-c1 Second card, second counter/timer
892         51 = /dev/ml16pb-c2 Second card, third counter/timer
893              ...
894 39 block
895
896 40 char
897
898 40 block
899
900 41 char Yet Another Micro Monitor
901          0 = /dev/yamm Yet Another Micro Monitor
902
903 41 block
904
905 42 char Demo/sample use
906
907 42 block Demo/sample use
908
909        This number is intended for use in sample code, as
910        well as a general "example" device number. It
911        should never be used for a device driver that is being
912        distributed; either obtain an official number or use
913        the local/experimental range. The sudden addition or
914        removal of a driver with this number should not cause
915        ill effects to the system (bugs excepted.)
916
917        IN PARTICULAR, ANY DISTRIBUTION WHICH CONTAINS A
918        DEVICE DRIVER USING MAJOR NUMBER 42 IS NONCOMPLIANT.
919
920 43 char isdn4linux virtual modem
921          0 = /dev/ttyI0 First virtual modem
922            ...
923         63 = /dev/ttyI63 64th virtual modem
924
925 43 block Network block devices
926          0 = /dev/nb0 First network block device
927          1 = /dev/nb1 Second network block device
928            ...
929
930        Network Block Device is somehow similar to loopback
931        devices: If you read from it, it sends packet across
932        network asking server for data. If you write to it, it
933        sends packet telling server to write. It could be used
934        to mounting filesystems over the net, swapping over
935        the net, implementing block device in userland etc.
936
937 44 char isdn4linux virtual modem - alternate devices
938          0 = /dev/cui0 Callout device for ttyI0
939            ...
940         63 = /dev/cui63 Callout device for ttyI63
941
942 44 block Flash Translation Layer (FTL) filesystems
943          0 = /dev/ftla FTL on first Memory Technology Device
944         16 = /dev/ftlb FTL on second Memory Technology Device
945         32 = /dev/ftlc FTL on third Memory Technology Device
946            ...
947        240 = /dev/ftlp FTL on 16th Memory Technology Device
948
949        Partitions are handled in the same way as for IDE
950        disks (see major number 3) except that the partition
951        limit is 15 rather than 63 per disk (same as SCSI.)
952
953 45 char isdn4linux ISDN BRI driver
954          0 = /dev/isdn0 First virtual B channel raw data
955            ...
956         63 = /dev/isdn63 64th virtual B channel raw data
957         64 = /dev/isdnctrl0 First channel control/debug
958            ...
959        127 = /dev/isdnctrl63 64th channel control/debug
960
961        128 = /dev/ippp0 First SyncPPP device
962            ...
963        191 = /dev/ippp63 64th SyncPPP device
964
965        255 = /dev/isdninfo ISDN monitor interface
966
967 45 block Parallel port IDE disk devices
968          0 = /dev/pda First parallel port IDE disk
969         16 = /dev/pdb Second parallel port IDE disk
970         32 = /dev/pdc Third parallel port IDE disk
971         48 = /dev/pdd Fourth parallel port IDE disk
972
973        Partitions are handled in the same way as for IDE
974        disks (see major number 3) except that the partition
975        limit is 15 rather than 63 per disk.
976
977 46 char Comtrol Rocketport serial card
978          0 = /dev/ttyR0 First Rocketport port
979          1 = /dev/ttyR1 Second Rocketport port
980            ...
981 46 block Parallel port ATAPI CD-ROM devices
982          0 = /dev/pcd0 First parallel port ATAPI CD-ROM
983          1 = /dev/pcd1 Second parallel port ATAPI CD-ROM
984          2 = /dev/pcd2 Third parallel port ATAPI CD-ROM
985          3 = /dev/pcd3 Fourth parallel port ATAPI CD-ROM
986
987 47 char Comtrol Rocketport serial card - alternate devices
988          0 = /dev/cur0 Callout device for ttyR0
989          1 = /dev/cur1 Callout device for ttyR1
990            ...
991 47 block Parallel port ATAPI disk devices
992          0 = /dev/pf0 First parallel port ATAPI disk
993          1 = /dev/pf1 Second parallel port ATAPI disk
994          2 = /dev/pf2 Third parallel port ATAPI disk
995          3 = /dev/pf3 Fourth parallel port ATAPI disk
996
997        This driver is intended for floppy disks and similar
998        devices and hence does not support partitioning.
999
1000 48 char SDL RISCom serial card
1001          0 = /dev/ttyL0 First RISCom port
1002          1 = /dev/ttyL1 Second RISCom port
1003            ...
1004 48 block Mylex DAC960 PCI RAID controller; first controller
1005          0 = /dev/rd/c0d0 First disk, whole disk
1006          8 = /dev/rd/c0d1 Second disk, whole disk
1007            ...
1008        248 = /dev/rd/c0d31 32nd disk, whole disk
1009
1010        For partitions add:
1011          0 = /dev/rd/c?d? Whole disk
1012          1 = /dev/rd/c?d?p1 First partition
1013            ...
1014          7 = /dev/rd/c?d?p7 Seventh partition
1015
1016 49 char SDL RISCom serial card - alternate devices
1017          0 = /dev/cul0 Callout device for ttyL0
1018          1 = /dev/cul1 Callout device for ttyL1
1019            ...
1020 49 block Mylex DAC960 PCI RAID controller; second controller
1021          0 = /dev/rd/c1d0 First disk, whole disk
1022          8 = /dev/rd/c1d1 Second disk, whole disk
1023            ...
1024        248 = /dev/rd/c1d31 32nd disk, whole disk
1025
1026        Partitions are handled as for major 48.
1027
1028 50 char Reserved for GLINT
1029
1030 50 block Mylex DAC960 PCI RAID controller; third controller
1031          0 = /dev/rd/c2d0 First disk, whole disk
1032          8 = /dev/rd/c2d1 Second disk, whole disk
1033            ...
1034        248 = /dev/rd/c2d31 32nd disk, whole disk
1035
1036 51 char Baycom radio modem OR Radio Tech BIM-XXX-RS232 radio modem
1037          0 = /dev/bc0 First Baycom radio modem
1038          1 = /dev/bc1 Second Baycom radio modem
1039            ...
1040 51 block Mylex DAC960 PCI RAID controller; fourth controller
1041          0 = /dev/rd/c3d0 First disk, whole disk
1042          8 = /dev/rd/c3d1 Second disk, whole disk
1043            ...
1044        248 = /dev/rd/c3d31 32nd disk, whole disk
1045
1046        Partitions are handled as for major 48.
1047
1048 52 char Spellcaster DataComm/BRI ISDN card
1049          0 = /dev/dcbri0 First DataComm card
1050          1 = /dev/dcbri1 Second DataComm card
1051          2 = /dev/dcbri2 Third DataComm card
1052          3 = /dev/dcbri3 Fourth DataComm card
1053
1054 52 block Mylex DAC960 PCI RAID controller; fifth controller
1055          0 = /dev/rd/c4d0 First disk, whole disk
1056          8 = /dev/rd/c4d1 Second disk, whole disk
1057            ...
1058        248 = /dev/rd/c4d31 32nd disk, whole disk
1059
1060        Partitions are handled as for major 48.
1061
1062 53 char BDM interface for remote debugging MC683xx microcontrollers
1063          0 = /dev/pd_bdm0 PD BDM interface on lp0
1064          1 = /dev/pd_bdm1 PD BDM interface on lp1
1065          2 = /dev/pd_bdm2 PD BDM interface on lp2
1066          4 = /dev/icd_bdm0 ICD BDM interface on lp0
1067          5 = /dev/icd_bdm1 ICD BDM interface on lp1
1068          6 = /dev/icd_bdm2 ICD BDM interface on lp2
1069
1070        This device is used for the interfacing to the MC683xx
1071        microcontrollers via Background Debug Mode by use of a
1072        Parallel Port interface. PD is the Motorola Public
1073        Domain Interface and ICD is the commercial interface
1074        by P&E.
1075
1076 53 block Mylex DAC960 PCI RAID controller; sixth controller
1077          0 = /dev/rd/c5d0 First disk, whole disk
1078          8 = /dev/rd/c5d1 Second disk, whole disk
1079            ...
1080        248 = /dev/rd/c5d31 32nd disk, whole disk
1081
1082        Partitions are handled as for major 48.
1083
1084 54 char Electrocardiognosis Holter serial card
1085          0 = /dev/holter0 First Holter port
1086          1 = /dev/holter1 Second Holter port
1087          2 = /dev/holter2 Third Holter port
1088
1089        A custom serial card used by Electrocardiognosis SRL
1090        <mseritan@ottonel.pub.ro> to transfer data from Holter
1091        24-hour heart monitoring equipment.
1092
1093 54 block Mylex DAC960 PCI RAID controller; seventh controller
1094          0 = /dev/rd/c6d0 First disk, whole disk
1095          8 = /dev/rd/c6d1 Second disk, whole disk
1096            ...
1097        248 = /dev/rd/c6d31 32nd disk, whole disk
1098
1099        Partitions are handled as for major 48.
1100
1101 55 char DSP56001 digital signal processor
1102          0 = /dev/dsp56k First DSP56001
1103
1104 55 block Mylex DAC960 PCI RAID controller; eighth controller
1105          0 = /dev/rd/c7d0 First disk, whole disk
1106          8 = /dev/rd/c7d1 Second disk, whole disk
1107            ...
1108        248 = /dev/rd/c7d31 32nd disk, whole disk
1109
1110        Partitions are handled as for major 48.
1111
1112 56 char Apple Desktop Bus
1113          0 = /dev/adb ADB bus control
1114
1115        Additional devices will be added to this number, all
1116        starting with /dev/adb.
1117
1118 56 block Fifth IDE hard disk/CD-ROM interface
1119          0 = /dev/hdi Master: whole disk (or CD-ROM)
1120         64 = /dev/hdj Slave: whole disk (or CD-ROM)
1121
1122        Partitions are handled the same way as for the first
1123        interface (see major number 3).
1124
1125 57 char Hayes ESP serial card
1126          0 = /dev/ttyP0 First ESP port
1127          1 = /dev/ttyP1 Second ESP port
1128            ...
1129
1130 57 block Sixth IDE hard disk/CD-ROM interface
1131          0 = /dev/hdk Master: whole disk (or CD-ROM)
1132         64 = /dev/hdl Slave: whole disk (or CD-ROM)
1133
1134        Partitions are handled the same way as for the first
1135        interface (see major number 3).
1136
1137 58 char Hayes ESP serial card - alternate devices
1138          0 = /dev/cup0 Callout device for ttyP0
1139          1 = /dev/cup1 Callout device for ttyP1
1140            ...
1141
1142 58 block Reserved for logical volume manager
1143
1144 59 char sf firewall package
1145          0 = /dev/firewall Communication with sf kernel module
1146
1147 59 block Generic PDA filesystem device
1148          0 = /dev/pda0 First PDA device
1149          1 = /dev/pda1 Second PDA device
1150            ...
1151
1152        The pda devices are used to mount filesystems on
1153        remote pda's (basically slow handheld machines with
1154        proprietary OS's and limited memory and storage
1155        running small fs translation drivers) through serial /
1156        IRDA / parallel links.
1157
1158        NAMING CONFLICT -- PROPOSED REVISED NAME /dev/rpda0 etc
1159
1160 60-63 char LOCAL/EXPERIMENTAL USE
1161
1162 60-63 block LOCAL/EXPERIMENTAL USE
1163        Allocated for local/experimental use. For devices not
1164        assigned official numbers, these ranges should be
1165        used in order to avoid conflicting with future assignments.
1166
1167 64 char ENskip kernel encryption package
1168          0 = /dev/enskip Communication with ENskip kernel module
1169
1170 64 block Scramdisk/DriveCrypt encrypted devices
1171          0 = /dev/scramdisk/master Master node for ioctls
1172          1 = /dev/scramdisk/1 First encrypted device
1173          2 = /dev/scramdisk/2 Second encrypted device
1174          ...
1175        255 = /dev/scramdisk/255 255th encrypted device
1176
1177        The filename of the encrypted container and the passwords
1178        are sent via ioctls (using the sdmount tool) to the master
1179        node which then activates them via one of the
1180        /dev/scramdisk/x nodes for loop mounting (all handled
1181        through the sdmount tool).
1182
1183        Requested by: andy@scramdisklinux.org
1184
1185 65 char Sundance "plink" Transputer boards (obsolete, unused)
1186          0 = /dev/plink0 First plink device
1187          1 = /dev/plink1 Second plink device
1188          2 = /dev/plink2 Third plink device
1189          3 = /dev/plink3 Fourth plink device
1190         64 = /dev/rplink0 First plink device, raw
1191         65 = /dev/rplink1 Second plink device, raw
1192         66 = /dev/rplink2 Third plink device, raw
1193         67 = /dev/rplink3 Fourth plink device, raw
1194        128 = /dev/plink0d First plink device, debug
1195        129 = /dev/plink1d Second plink device, debug
1196        130 = /dev/plink2d Third plink device, debug
1197        131 = /dev/plink3d Fourth plink device, debug
1198        192 = /dev/rplink0d First plink device, raw, debug
1199        193 = /dev/rplink1d Second plink device, raw, debug
1200        194 = /dev/rplink2d Third plink device, raw, debug
1201        195 = /dev/rplink3d Fourth plink device, raw, debug
1202
1203        This is a commercial driver; contact James Howes
1204        <jth@prosig.demon.co.uk> for information.
1205
1206 65 block SCSI disk devices (16-31)
1207          0 = /dev/sdq 17th SCSI disk whole disk
1208         16 = /dev/sdr 18th SCSI disk whole disk
1209         32 = /dev/sds 19th SCSI disk whole disk
1210            ...
1211        240 = /dev/sdaf 32nd SCSI disk whole disk
1212
1213        Partitions are handled in the same way as for IDE
1214        disks (see major number 3) except that the limit on
1215        partitions is 15.
1216
1217 66 char YARC PowerPC PCI coprocessor card
1218          0 = /dev/yppcpci0 First YARC card
1219          1 = /dev/yppcpci1 Second YARC card
1220            ...
1221
1222 66 block SCSI disk devices (32-47)
1223          0 = /dev/sdag 33th SCSI disk whole disk
1224         16 = /dev/sdah 34th SCSI disk whole disk
1225         32 = /dev/sdai 35th SCSI disk whole disk
1226            ...
1227        240 = /dev/sdav 48nd SCSI disk whole disk
1228
1229        Partitions are handled in the same way as for IDE
1230        disks (see major number 3) except that the limit on
1231        partitions is 15.
1232
1233 67 char Coda network file system
1234          0 = /dev/cfs0 Coda cache manager
1235
1236        See http://www.coda.cs.cmu.edu for information about Coda.
1237
1238 67 block SCSI disk devices (48-63)
1239          0 = /dev/sdaw 49th SCSI disk whole disk
1240         16 = /dev/sdax 50th SCSI disk whole disk
1241         32 = /dev/sday 51st SCSI disk whole disk
1242            ...
1243        240 = /dev/sdbl 64th SCSI disk whole disk
1244
1245        Partitions are handled in the same way as for IDE
1246        disks (see major number 3) except that the limit on
1247        partitions is 15.
1248
1249 68 char CAPI 2.0 interface
1250          0 = /dev/capi20 Control device
1251          1 = /dev/capi20.00 First CAPI 2.0 application
1252          2 = /dev/capi20.01 Second CAPI 2.0 application
1253            ...
1254         20 = /dev/capi20.19 19th CAPI 2.0 application
1255
1256        ISDN CAPI 2.0 driver for use with CAPI 2.0
1257        applications; currently supports the AVM B1 card.
1258
1259 68 block SCSI disk devices (64-79)
1260          0 = /dev/sdbm 65th SCSI disk whole disk
1261         16 = /dev/sdbn 66th SCSI disk whole disk
1262         32 = /dev/sdbo 67th SCSI disk whole disk
1263            ...
1264        240 = /dev/sdcb 80th SCSI disk whole disk
1265
1266        Partitions are handled in the same way as for IDE
1267        disks (see major number 3) except that the limit on
1268        partitions is 15.
1269
1270 69 char MA16 numeric accelerator card
1271          0 = /dev/ma16 Board memory access
1272
1273 69 block SCSI disk devices (80-95)
1274          0 = /dev/sdcc 81st SCSI disk whole disk
1275         16 = /dev/sdcd 82nd SCSI disk whole disk
1276         32 = /dev/sdce 83th SCSI disk whole disk
1277            ...
1278        240 = /dev/sdcr 96th SCSI disk whole disk
1279
1280        Partitions are handled in the same way as for IDE
1281        disks (see major number 3) except that the limit on
1282        partitions is 15.
1283
1284 70 char SpellCaster Protocol Services Interface
1285          0 = /dev/apscfg Configuration interface
1286          1 = /dev/apsauth Authentication interface
1287          2 = /dev/apslog Logging interface
1288          3 = /dev/apsdbg Debugging interface
1289         64 = /dev/apsisdn ISDN command interface
1290         65 = /dev/apsasync Async command interface
1291        128 = /dev/apsmon Monitor interface
1292
1293 70 block SCSI disk devices (96-111)
1294          0 = /dev/sdcs 97th SCSI disk whole disk
1295         16 = /dev/sdct 98th SCSI disk whole disk
1296         32 = /dev/sdcu 99th SCSI disk whole disk
1297            ...
1298        240 = /dev/sddh 112nd SCSI disk whole disk
1299
1300        Partitions are handled in the same way as for IDE
1301        disks (see major number 3) except that the limit on
1302        partitions is 15.
1303
1304 71 char Computone IntelliPort II serial card
1305          0 = /dev/ttyF0 IntelliPort II board 0, port 0
1306          1 = /dev/ttyF1 IntelliPort II board 0, port 1
1307            ...
1308         63 = /dev/ttyF63 IntelliPort II board 0, port 63
1309         64 = /dev/ttyF64 IntelliPort II board 1, port 0
1310         65 = /dev/ttyF65 IntelliPort II board 1, port 1
1311            ...
1312        127 = /dev/ttyF127 IntelliPort II board 1, port 63
1313        128 = /dev/ttyF128 IntelliPort II board 2, port 0
1314        129 = /dev/ttyF129 IntelliPort II board 2, port 1
1315            ...
1316        191 = /dev/ttyF191 IntelliPort II board 2, port 63
1317        192 = /dev/ttyF192 IntelliPort II board 3, port 0
1318        193 = /dev/ttyF193 IntelliPort II board 3, port 1
1319            ...
1320        255 = /dev/ttyF255 IntelliPort II board 3, port 63
1321
1322 71 block SCSI disk devices (112-127)
1323          0 = /dev/sddi 113th SCSI disk whole disk
1324         16 = /dev/sddj 114th SCSI disk whole disk
1325         32 = /dev/sddk 115th SCSI disk whole disk
1326            ...
1327        240 = /dev/sddx 128th SCSI disk whole disk
1328
1329        Partitions are handled in the same way as for IDE
1330        disks (see major number 3) except that the limit on
1331        partitions is 15.
1332
1333 72 char Computone IntelliPort II serial card - alternate devices
1334          0 = /dev/cuf0 Callout device for ttyF0
1335          1 = /dev/cuf1 Callout device for ttyF1
1336            ...
1337         63 = /dev/cuf63 Callout device for ttyF63
1338         64 = /dev/cuf64 Callout device for ttyF64
1339         65 = /dev/cuf65 Callout device for ttyF65
1340            ...
1341        127 = /dev/cuf127 Callout device for ttyF127
1342        128 = /dev/cuf128 Callout device for ttyF128
1343        129 = /dev/cuf129 Callout device for ttyF129
1344            ...
1345        191 = /dev/cuf191 Callout device for ttyF191
1346        192 = /dev/cuf192 Callout device for ttyF192
1347        193 = /dev/cuf193 Callout device for ttyF193
1348            ...
1349        255 = /dev/cuf255 Callout device for ttyF255
1350
1351 72 block Compaq Intelligent Drive Array, first controller
1352          0 = /dev/ida/c0d0 First logical drive whole disk
1353         16 = /dev/ida/c0d1 Second logical drive whole disk
1354            ...
1355        240 = /dev/ida/c0d15 16th logical drive whole disk
1356
1357        Partitions are handled the same way as for Mylex
1358        DAC960 (see major number 48) except that the limit on
1359        partitions is 15.
1360
1361 73 char Computone IntelliPort II serial card - control devices
1362          0 = /dev/ip2ipl0 Loadware device for board 0
1363          1 = /dev/ip2stat0 Status device for board 0
1364          4 = /dev/ip2ipl1 Loadware device for board 1
1365          5 = /dev/ip2stat1 Status device for board 1
1366          8 = /dev/ip2ipl2 Loadware device for board 2
1367          9 = /dev/ip2stat2 Status device for board 2
1368         12 = /dev/ip2ipl3 Loadware device for board 3
1369         13 = /dev/ip2stat3 Status device for board 3
1370
1371 73 block Compaq Intelligent Drive Array, second controller
1372          0 = /dev/ida/c1d0 First logical drive whole disk
1373         16 = /dev/ida/c1d1 Second logical drive whole disk
1374            ...
1375        240 = /dev/ida/c1d15 16th logical drive whole disk
1376
1377        Partitions are handled the same way as for Mylex
1378        DAC960 (see major number 48) except that the limit on
1379        partitions is 15.
1380
1381 74 char SCI bridge
1382          0 = /dev/SCI/0 SCI device 0
1383          1 = /dev/SCI/1 SCI device 1
1384            ...
1385
1386        Currently for Dolphin Interconnect Solutions' PCI-SCI
1387        bridge.
1388
1389 74 block Compaq Intelligent Drive Array, third controller
1390          0 = /dev/ida/c2d0 First logical drive whole disk
1391         16 = /dev/ida/c2d1 Second logical drive whole disk
1392            ...
1393        240 = /dev/ida/c2d15 16th logical drive whole disk
1394
1395        Partitions are handled the same way as for Mylex
1396        DAC960 (see major number 48) except that the limit on
1397        partitions is 15.
1398
1399 75 char Specialix IO8+ serial card
1400          0 = /dev/ttyW0 First IO8+ port, first card
1401          1 = /dev/ttyW1 Second IO8+ port, first card
1402            ...
1403          8 = /dev/ttyW8 First IO8+ port, second card
1404            ...
1405
1406 75 block Compaq Intelligent Drive Array, fourth controller
1407          0 = /dev/ida/c3d0 First logical drive whole disk
1408         16 = /dev/ida/c3d1 Second logical drive whole disk
1409            ...
1410        240 = /dev/ida/c3d15 16th logical drive whole disk
1411
1412        Partitions are handled the same way as for Mylex
1413        DAC960 (see major number 48) except that the limit on
1414        partitions is 15.
1415
1416 76 char Specialix IO8+ serial card - alternate devices
1417          0 = /dev/cuw0 Callout device for ttyW0
1418          1 = /dev/cuw1 Callout device for ttyW1
1419            ...
1420          8 = /dev/cuw8 Callout device for ttyW8
1421            ...
1422
1423 76 block Compaq Intelligent Drive Array, fifth controller
1424          0 = /dev/ida/c4d0 First logical drive whole disk
1425         16 = /dev/ida/c4d1 Second logical drive whole disk
1426            ...
1427        240 = /dev/ida/c4d15 16th logical drive whole disk
1428
1429        Partitions are handled the same way as for Mylex
1430        DAC960 (see major number 48) except that the limit on
1431        partitions is 15.
1432
1433
1434 77 char ComScire Quantum Noise Generator
1435          0 = /dev/qng ComScire Quantum Noise Generator
1436
1437 77 block Compaq Intelligent Drive Array, sixth controller
1438          0 = /dev/ida/c5d0 First logical drive whole disk
1439         16 = /dev/ida/c5d1 Second logical drive whole disk
1440            ...
1441        240 = /dev/ida/c5d15 16th logical drive whole disk
1442
1443        Partitions are handled the same way as for Mylex
1444        DAC960 (see major number 48) except that the limit on
1445        partitions is 15.
1446
1447 78 char PAM Software's multimodem boards
1448          0 = /dev/ttyM0 First PAM modem
1449          1 = /dev/ttyM1 Second PAM modem
1450            ...
1451
1452 78 block Compaq Intelligent Drive Array, seventh controller
1453          0 = /dev/ida/c6d0 First logical drive whole disk
1454         16 = /dev/ida/c6d1 Second logical drive whole disk
1455            ...
1456        240 = /dev/ida/c6d15 16th logical drive whole disk
1457
1458        Partitions are handled the same way as for Mylex
1459        DAC960 (see major number 48) except that the limit on
1460        partitions is 15.
1461
1462 79 char PAM Software's multimodem boards - alternate devices
1463          0 = /dev/cum0 Callout device for ttyM0
1464          1 = /dev/cum1 Callout device for ttyM1
1465            ...
1466
1467 79 block Compaq Intelligent Drive Array, eighth controller
1468          0 = /dev/ida/c7d0 First logical drive whole disk
1469         16 = /dev/ida/c7d1 Second logical drive whole disk
1470            ...
1471        240 = /dev/ida/c715 16th logical drive whole disk
1472
1473        Partitions are handled the same way as for Mylex
1474        DAC960 (see major number 48) except that the limit on
1475        partitions is 15.
1476
1477 80 char Photometrics AT200 CCD camera
1478          0 = /dev/at200 Photometrics AT200 CCD camera
1479
1480 80 block I2O hard disk
1481          0 = /dev/i2o/hda First I2O hard disk, whole disk
1482         16 = /dev/i2o/hdb Second I2O hard disk, whole disk
1483            ...
1484        240 = /dev/i2o/hdp 16th I2O hard disk, whole disk
1485
1486        Partitions are handled in the same way as for IDE
1487        disks (see major number 3) except that the limit on
1488        partitions is 15.
1489
1490 81 char video4linux
1491          0 = /dev/video0 Video capture/overlay device
1492            ...
1493         63 = /dev/video63 Video capture/overlay device
1494         64 = /dev/radio0 Radio device
1495            ...
1496        127 = /dev/radio63 Radio device
1497        224 = /dev/vbi0 Vertical blank interrupt
1498            ...
1499        255 = /dev/vbi31 Vertical blank interrupt
1500
1501 81 block I2O hard disk
1502          0 = /dev/i2o/hdq 17th I2O hard disk, whole disk
1503         16 = /dev/i2o/hdr 18th I2O hard disk, whole disk
1504            ...
1505        240 = /dev/i2o/hdaf 32nd I2O hard disk, whole disk
1506
1507        Partitions are handled in the same way as for IDE
1508        disks (see major number 3) except that the limit on
1509        partitions is 15.
1510
1511 82 char WiNRADiO communications receiver card
1512          0 = /dev/winradio0 First WiNRADiO card
1513          1 = /dev/winradio1 Second WiNRADiO card
1514            ...
1515
1516        The driver and documentation may be obtained from
1517        http://www.winradio.com/
1518
1519 82 block I2O hard disk
1520          0 = /dev/i2o/hdag 33rd I2O hard disk, whole disk
1521         16 = /dev/i2o/hdah 34th I2O hard disk, whole disk
1522            ...
1523        240 = /dev/i2o/hdav 48th I2O hard disk, whole disk
1524
1525        Partitions are handled in the same way as for IDE
1526        disks (see major number 3) except that the limit on
1527        partitions is 15.
1528
1529 83 char Matrox mga_vid video driver
1530          0 = /dev/mga_vid0 1st video card
1531         1 = /dev/mga_vid1 2nd video card
1532         2 = /dev/mga_vid2 3rd video card
1533          ...
1534            15 = /dev/mga_vid15 16th video card
1535
1536 83 block I2O hard disk
1537          0 = /dev/i2o/hdaw 49th I2O hard disk, whole disk
1538         16 = /dev/i2o/hdax 50th I2O hard disk, whole disk
1539            ...
1540        240 = /dev/i2o/hdbl 64th I2O hard disk, whole disk
1541
1542        Partitions are handled in the same way as for IDE
1543        disks (see major number 3) except that the limit on
1544        partitions is 15.
1545
1546 84 char Ikon 1011[57] Versatec Greensheet Interface
1547          0 = /dev/ihcp0 First Greensheet port
1548          1 = /dev/ihcp1 Second Greensheet port
1549
1550 84 block I2O hard disk
1551          0 = /dev/i2o/hdbm 65th I2O hard disk, whole disk
1552         16 = /dev/i2o/hdbn 66th I2O hard disk, whole disk
1553            ...
1554        240 = /dev/i2o/hdcb 80th I2O hard disk, whole disk
1555
1556        Partitions are handled in the same way as for IDE
1557        disks (see major number 3) except that the limit on
1558        partitions is 15.
1559
1560 85 char Linux/SGI shared memory input queue
1561          0 = /dev/shmiq Master shared input queue
1562          1 = /dev/qcntl0 First device pushed
1563          2 = /dev/qcntl1 Second device pushed
1564            ...
1565
1566 85 block I2O hard disk
1567          0 = /dev/i2o/hdcc 81st I2O hard disk, whole disk
1568         16 = /dev/i2o/hdcd 82nd I2O hard disk, whole disk
1569            ...
1570        240 = /dev/i2o/hdcr 96th I2O hard disk, whole disk
1571
1572        Partitions are handled in the same way as for IDE
1573        disks (see major number 3) except that the limit on
1574        partitions is 15.
1575
1576 86 char SCSI media changer
1577          0 = /dev/sch0 First SCSI media changer
1578          1 = /dev/sch1 Second SCSI media changer
1579            ...
1580
1581 86 block I2O hard disk
1582          0 = /dev/i2o/hdcs 97th I2O hard disk, whole disk
1583         16 = /dev/i2o/hdct 98th I2O hard disk, whole disk
1584            ...
1585        240 = /dev/i2o/hddh 112th I2O hard disk, whole disk
1586
1587        Partitions are handled in the same way as for IDE
1588        disks (see major number 3) except that the limit on
1589        partitions is 15.
1590
1591 87 char Sony Control-A1 stereo control bus
1592          0 = /dev/controla0 First device on chain
1593          1 = /dev/controla1 Second device on chain
1594            ...
1595
1596 87 block I2O hard disk
1597          0 = /dev/i2o/hddi 113rd I2O hard disk, whole disk
1598         16 = /dev/i2o/hddj 114th I2O hard disk, whole disk
1599            ...
1600        240 = /dev/i2o/hddx 128th I2O hard disk, whole disk
1601
1602        Partitions are handled in the same way as for IDE
1603        disks (see major number 3) except that the limit on
1604        partitions is 15.
1605
1606 88 char COMX synchronous serial card
1607          0 = /dev/comx0 COMX channel 0
1608          1 = /dev/comx1 COMX channel 1
1609            ...
1610
1611 88 block Seventh IDE hard disk/CD-ROM interface
1612          0 = /dev/hdm Master: whole disk (or CD-ROM)
1613         64 = /dev/hdn Slave: whole disk (or CD-ROM)
1614
1615        Partitions are handled the same way as for the first
1616        interface (see major number 3).
1617
1618 89 char I2C bus interface
1619          0 = /dev/i2c-0 First I2C adapter
1620          1 = /dev/i2c-1 Second I2C adapter
1621            ...
1622
1623 89 block Eighth IDE hard disk/CD-ROM interface
1624          0 = /dev/hdo Master: whole disk (or CD-ROM)
1625         64 = /dev/hdp Slave: whole disk (or CD-ROM)
1626
1627        Partitions are handled the same way as for the first
1628        interface (see major number 3).
1629
1630 90 char Memory Technology Device (RAM, ROM, Flash)
1631          0 = /dev/mtd0 First MTD (rw)
1632          1 = /dev/mtdr0 First MTD (ro)
1633            ...
1634         30 = /dev/mtd15 16th MTD (rw)
1635         31 = /dev/mtdr15 16th MTD (ro)
1636
1637 90 block Ninth IDE hard disk/CD-ROM interface
1638          0 = /dev/hdq Master: whole disk (or CD-ROM)
1639         64 = /dev/hdr Slave: whole disk (or CD-ROM)
1640
1641        Partitions are handled the same way as for the first
1642        interface (see major number 3).
1643
1644 91 char CAN-Bus devices
1645          0 = /dev/can0 First CAN-Bus controller
1646          1 = /dev/can1 Second CAN-Bus controller
1647            ...
1648
1649 91 block Tenth IDE hard disk/CD-ROM interface
1650          0 = /dev/hds Master: whole disk (or CD-ROM)
1651         64 = /dev/hdt Slave: whole disk (or CD-ROM)
1652
1653        Partitions are handled the same way as for the first
1654        interface (see major number 3).
1655
1656 92 char Reserved for ith Kommunikationstechnik MIC ISDN card
1657
1658 92 block PPDD encrypted disk driver
1659          0 = /dev/ppdd0 First encrypted disk
1660          1 = /dev/ppdd1 Second encrypted disk
1661            ...
1662
1663        Partitions are handled in the same way as for IDE
1664        disks (see major number 3) except that the limit on
1665        partitions is 15.
1666
1667 93 char
1668
1669 93 block NAND Flash Translation Layer filesystem
1670          0 = /dev/nftla First NFTL layer
1671         16 = /dev/nftlb Second NFTL layer
1672            ...
1673        240 = /dev/nftlp 16th NTFL layer
1674
1675 94 char
1676
1677 94 block IBM S/390 DASD block storage
1678              0 = /dev/dasda First DASD device, major
1679              1 = /dev/dasda1 First DASD device, block 1
1680              2 = /dev/dasda2 First DASD device, block 2
1681              3 = /dev/dasda3 First DASD device, block 3
1682              4 = /dev/dasdb Second DASD device, major
1683              5 = /dev/dasdb1 Second DASD device, block 1
1684              6 = /dev/dasdb2 Second DASD device, block 2
1685              7 = /dev/dasdb3 Second DASD device, block 3
1686            ...
1687
1688 95 char IP filter
1689          0 = /dev/ipl Filter control device/log file
1690          1 = /dev/ipnat NAT control device/log file
1691          2 = /dev/ipstate State information log file
1692          3 = /dev/ipauth Authentication control device/log file
1693            ...
1694
1695 96 char Parallel port ATAPI tape devices
1696          0 = /dev/pt0 First parallel port ATAPI tape
1697          1 = /dev/pt1 Second parallel port ATAPI tape
1698            ...
1699        128 = /dev/npt0 First p.p. ATAPI tape, no rewind
1700        129 = /dev/npt1 Second p.p. ATAPI tape, no rewind
1701            ...
1702
1703 96 block Inverse NAND Flash Translation Layer
1704          0 = /dev/inftla First INFTL layer
1705         16 = /dev/inftlb Second INFTL layer
1706            ...
1707        240 = /dev/inftlp 16th INTFL layer
1708
1709 97 char Parallel port generic ATAPI interface
1710          0 = /dev/pg0 First parallel port ATAPI device
1711          1 = /dev/pg1 Second parallel port ATAPI device
1712          2 = /dev/pg2 Third parallel port ATAPI device
1713          3 = /dev/pg3 Fourth parallel port ATAPI device
1714
1715        These devices support the same API as the generic SCSI
1716        devices.
1717
1718 98 char Control and Measurement Device (comedi)
1719          0 = /dev/comedi0 First comedi device
1720          1 = /dev/comedi1 Second comedi device
1721            ...
1722
1723        See http://stm.lbl.gov/comedi.
1724
1725 98 block User-mode virtual block device
1726          0 = /dev/ubda First user-mode block device
1727         16 = /dev/udbb Second user-mode block device
1728            ...
1729
1730        Partitions are handled in the same way as for IDE
1731        disks (see major number 3) except that the limit on
1732        partitions is 15.
1733
1734        This device is used by the user-mode virtual kernel port.
1735
1736 99 char Raw parallel ports
1737          0 = /dev/parport0 First parallel port
1738          1 = /dev/parport1 Second parallel port
1739            ...
1740
1741 99 block JavaStation flash disk
1742          0 = /dev/jsfd JavaStation flash disk
1743
1744100 char Telephony for Linux
1745          0 = /dev/phone0 First telephony device
1746          1 = /dev/phone1 Second telephony device
1747            ...
1748
1749101 char Motorola DSP 56xxx board
1750          0 = /dev/mdspstat Status information
1751          1 = /dev/mdsp1 First DSP board I/O controls
1752            ...
1753         16 = /dev/mdsp16 16th DSP board I/O controls
1754
1755101 block AMI HyperDisk RAID controller
1756          0 = /dev/amiraid/ar0 First array whole disk
1757         16 = /dev/amiraid/ar1 Second array whole disk
1758            ...
1759        240 = /dev/amiraid/ar15 16th array whole disk
1760
1761        For each device, partitions are added as:
1762          0 = /dev/amiraid/ar? Whole disk
1763          1 = /dev/amiraid/ar?p1 First partition
1764          2 = /dev/amiraid/ar?p2 Second partition
1765            ...
1766         15 = /dev/amiraid/ar?p15 15th partition
1767
1768102 char
1769
1770102 block Compressed block device
1771          0 = /dev/cbd/a First compressed block device, whole device
1772         16 = /dev/cbd/b Second compressed block device, whole device
1773            ...
1774        240 = /dev/cbd/p 16th compressed block device, whole device
1775
1776        Partitions are handled in the same way as for IDE
1777        disks (see major number 3) except that the limit on
1778        partitions is 15.
1779
1780103 char Arla network file system
1781          0 = /dev/nnpfs0 First NNPFS device
1782          1 = /dev/nnpfs1 Second NNPFS device
1783
1784        Arla is a free clone of the Andrew File System, AFS.
1785        The NNPFS device gives user mode filesystem
1786        implementations a kernel presence for caching and easy
1787        mounting. For more information about the project,
1788        write to <arla-drinkers@stacken.kth.se> or see
1789        http://www.stacken.kth.se/project/arla/
1790
1791103 block Audit device
1792          0 = /dev/audit Audit device
1793
1794104 char Flash BIOS support
1795
1796104 block Compaq Next Generation Drive Array, first controller
1797          0 = /dev/cciss/c0d0 First logical drive, whole disk
1798         16 = /dev/cciss/c0d1 Second logical drive, whole disk
1799            ...
1800        240 = /dev/cciss/c0d15 16th logical drive, whole disk
1801
1802        Partitions are handled the same way as for Mylex
1803        DAC960 (see major number 48) except that the limit on
1804        partitions is 15.
1805
1806105 char Comtrol VS-1000 serial controller
1807          0 = /dev/ttyV0 First VS-1000 port
1808          1 = /dev/ttyV1 Second VS-1000 port
1809            ...
1810
1811105 block Compaq Next Generation Drive Array, second controller
1812          0 = /dev/cciss/c1d0 First logical drive, whole disk
1813         16 = /dev/cciss/c1d1 Second logical drive, whole disk
1814            ...
1815        240 = /dev/cciss/c1d15 16th logical drive, whole disk
1816
1817        Partitions are handled the same way as for Mylex
1818        DAC960 (see major number 48) except that the limit on
1819        partitions is 15.
1820
1821106 char Comtrol VS-1000 serial controller - alternate devices
1822          0 = /dev/cuv0 First VS-1000 port
1823          1 = /dev/cuv1 Second VS-1000 port
1824            ...
1825
1826106 block Compaq Next Generation Drive Array, third controller
1827          0 = /dev/cciss/c2d0 First logical drive, whole disk
1828         16 = /dev/cciss/c2d1 Second logical drive, whole disk
1829            ...
1830        240 = /dev/cciss/c2d15 16th logical drive, whole disk
1831
1832        Partitions are handled the same way as for Mylex
1833        DAC960 (see major number 48) except that the limit on
1834        partitions is 15.
1835
1836107 char 3Dfx Voodoo Graphics device
1837          0 = /dev/3dfx Primary 3Dfx graphics device
1838
1839107 block Compaq Next Generation Drive Array, fourth controller
1840          0 = /dev/cciss/c3d0 First logical drive, whole disk
1841         16 = /dev/cciss/c3d1 Second logical drive, whole disk
1842            ...
1843        240 = /dev/cciss/c3d15 16th logical drive, whole disk
1844
1845        Partitions are handled the same way as for Mylex
1846        DAC960 (see major number 48) except that the limit on
1847        partitions is 15.
1848
1849108 char Device independent PPP interface
1850          0 = /dev/ppp Device independent PPP interface
1851
1852108 block Compaq Next Generation Drive Array, fifth controller
1853          0 = /dev/cciss/c4d0 First logical drive, whole disk
1854         16 = /dev/cciss/c4d1 Second logical drive, whole disk
1855            ...
1856        240 = /dev/cciss/c4d15 16th logical drive, whole disk
1857
1858        Partitions are handled the same way as for Mylex
1859        DAC960 (see major number 48) except that the limit on
1860        partitions is 15.
1861
1862109 char Reserved for logical volume manager
1863
1864109 block Compaq Next Generation Drive Array, sixth controller
1865          0 = /dev/cciss/c5d0 First logical drive, whole disk
1866         16 = /dev/cciss/c5d1 Second logical drive, whole disk
1867            ...
1868        240 = /dev/cciss/c5d15 16th logical drive, whole disk
1869
1870        Partitions are handled the same way as for Mylex
1871        DAC960 (see major number 48) except that the limit on
1872        partitions is 15.
1873
1874110 char miroMEDIA Surround board
1875          0 = /dev/srnd0 First miroMEDIA Surround board
1876          1 = /dev/srnd1 Second miroMEDIA Surround board
1877            ...
1878
1879110 block Compaq Next Generation Drive Array, seventh controller
1880          0 = /dev/cciss/c6d0 First logical drive, whole disk
1881         16 = /dev/cciss/c6d1 Second logical drive, whole disk
1882            ...
1883        240 = /dev/cciss/c6d15 16th logical drive, whole disk
1884
1885        Partitions are handled the same way as for Mylex
1886        DAC960 (see major number 48) except that the limit on
1887        partitions is 15.
1888
1889111 char
1890
1891111 block Compaq Next Generation Drive Array, eighth controller
1892          0 = /dev/cciss/c7d0 First logical drive, whole disk
1893         16 = /dev/cciss/c7d1 Second logical drive, whole disk
1894            ...
1895        240 = /dev/cciss/c7d15 16th logical drive, whole disk
1896
1897        Partitions are handled the same way as for Mylex
1898        DAC960 (see major number 48) except that the limit on
1899        partitions is 15.
1900
1901112 char ISI serial card
1902          0 = /dev/ttyM0 First ISI port
1903          1 = /dev/ttyM1 Second ISI port
1904            ...
1905
1906        There is currently a device-naming conflict between
1907        these and PAM multimodems (major 78).
1908
1909112 block IBM iSeries virtual disk
1910          0 = /dev/iseries/vda First virtual disk, whole disk
1911          8 = /dev/iseries/vdb Second virtual disk, whole disk
1912            ...
1913        200 = /dev/iseries/vdz 26th virtual disk, whole disk
1914        208 = /dev/iseries/vdaa 27th virtual disk, whole disk
1915            ...
1916        248 = /dev/iseries/vdaf 32nd virtual disk, whole disk
1917
1918        Partitions are handled in the same way as for IDE
1919        disks (see major number 3) except that the limit on
1920        partitions is 7.
1921
1922113 char ISI serial card - alternate devices
1923          0 = /dev/cum0 Callout device for ttyM0
1924          1 = /dev/cum1 Callout device for ttyM1
1925            ...
1926
1927113 block IBM iSeries virtual CD-ROM
1928          0 = /dev/iseries/vcda First virtual CD-ROM
1929          1 = /dev/iseries/vcdb Second virtual CD-ROM
1930            ...
1931
1932114 char Picture Elements ISE board
1933          0 = /dev/ise0 First ISE board
1934          1 = /dev/ise1 Second ISE board
1935            ...
1936        128 = /dev/isex0 Control node for first ISE board
1937        129 = /dev/isex1 Control node for second ISE board
1938            ...
1939
1940        The ISE board is an embedded computer, optimized for
1941        image processing. The /dev/iseN nodes are the general
1942        I/O access to the board, the /dev/isex0 nodes command
1943        nodes used to control the board.
1944
1945114 block IDE BIOS powered software RAID interfaces such as the
1946                Promise Fastrak
1947
1948                  0 = /dev/ataraid/d0
1949                  1 = /dev/ataraid/d0p1
1950                  2 = /dev/ataraid/d0p2
1951                  ...
1952                 16 = /dev/ataraid/d1
1953                 17 = /dev/ataraid/d1p1
1954                 18 = /dev/ataraid/d1p2
1955                  ...
1956                255 = /dev/ataraid/d15p15
1957
1958        Partitions are handled in the same way as for IDE
1959        disks (see major number 3) except that the limit on
1960        partitions is 15.
1961
1962115 char TI link cable devices (115 was formerly the console driver speaker)
1963          0 = /dev/tipar0 Parallel cable on first parallel port
1964          ...
1965          7 = /dev/tipar7 Parallel cable on seventh parallel port
1966
1967          8 = /dev/tiser0 Serial cable on first serial port
1968          ...
1969         15 = /dev/tiser7 Serial cable on seventh serial port
1970
1971         16 = /dev/tiusb0 First USB cable
1972          ...
1973         47 = /dev/tiusb31 32nd USB cable
1974
1975115 block NetWare (NWFS) Devices (0-255)
1976
1977                The NWFS (NetWare) devices are used to present a
1978                collection of NetWare Mirror Groups or NetWare
1979                Partitions as a logical storage segment for
1980                use in mounting NetWare volumes. A maximum of
1981                256 NetWare volumes can be supported in a single
1982                machine.
1983
1984                http://cgfa.telepac.pt/ftp2/kernel.org/linux/kernel/people/jmerkey/nwfs/
1985
1986                0 = /dev/nwfs/v0 First NetWare (NWFS) Logical Volume
1987                1 = /dev/nwfs/v1 Second NetWare (NWFS) Logical Volume
1988                2 = /dev/nwfs/v2 Third NetWare (NWFS) Logical Volume
1989                      ...
1990                255 = /dev/nwfs/v255 Last NetWare (NWFS) Logical Volume
1991
1992116 char Advanced Linux Sound Driver (ALSA)
1993
1994116 block MicroMemory battery backed RAM adapter (NVRAM)
1995                Supports 16 boards, 15 partitions each.
1996                Requested by neilb at cse.unsw.edu.au.
1997
1998         0 = /dev/umem/d0 Whole of first board
1999         1 = /dev/umem/d0p1 First partition of first board
2000         2 = /dev/umem/d0p2 Second partition of first board
2001        15 = /dev/umem/d0p15 15th partition of first board
2002
2003        16 = /dev/umem/d1 Whole of second board
2004        17 = /dev/umem/d1p1 First partition of second board
2005            ...
2006        255= /dev/umem/d15p15 15th partition of 16th board.
2007
2008117 char COSA/SRP synchronous serial card
2009          0 = /dev/cosa0c0 1st board, 1st channel
2010          1 = /dev/cosa0c1 1st board, 2nd channel
2011            ...
2012         16 = /dev/cosa1c0 2nd board, 1st channel
2013         17 = /dev/cosa1c1 2nd board, 2nd channel
2014            ...
2015
2016117 block Enterprise Volume Management System (EVMS)
2017
2018                The EVMS driver uses a layered, plug-in model to provide
2019                unparalleled flexibility and extensibility in managing
2020                storage. This allows for easy expansion or customization
2021                of various levels of volume management. Requested by
2022                Mark Peloquin (peloquin at us.ibm.com).
2023
2024                Note: EVMS populates and manages all the devnodes in
2025                /dev/evms.
2026
2027                http://sf.net/projects/evms
2028
2029                  0 = /dev/evms/block_device EVMS block device
2030                  1 = /dev/evms/legacyname1 First EVMS legacy device
2031                  2 = /dev/evms/legacyname2 Second EVMS legacy device
2032                    ...
2033                    Both ranges can grow (down or up) until they meet.
2034                    ...
2035                254 = /dev/evms/EVMSname2 Second EVMS native device
2036                255 = /dev/evms/EVMSname1 First EVMS native device
2037
2038                Note: legacyname(s) are derived from the normal legacy
2039                device names. For example, /dev/hda5 would become
2040                /dev/evms/hda5.
2041
2042118 char IBM Cryptographic Accelerator
2043          0 = /dev/ica Virtual interface to all IBM Crypto Accelerators
2044          1 = /dev/ica0 IBMCA Device 0
2045          2 = /dev/ica1 IBMCA Device 1
2046            ...
2047
2048119 char VMware virtual network control
2049          0 = /dev/vnet0 1st virtual network
2050          1 = /dev/vnet1 2nd virtual network
2051            ...
2052
2053120-127 char LOCAL/EXPERIMENTAL USE
2054
2055120-127 block LOCAL/EXPERIMENTAL USE
2056        Allocated for local/experimental use. For devices not
2057        assigned official numbers, these ranges should be
2058        used in order to avoid conflicting with future assignments.
2059
2060128-135 char Unix98 PTY masters
2061
2062        These devices should not have corresponding device
2063        nodes; instead they should be accessed through the
2064        /dev/ptmx cloning interface.
2065
2066128 block SCSI disk devices (128-143)
2067                  0 = /dev/sddy 129th SCSI disk whole disk
2068                 16 = /dev/sddz 130th SCSI disk whole disk
2069                 32 = /dev/sdea 131th SCSI disk whole disk
2070                    ...
2071                240 = /dev/sden 144th SCSI disk whole disk
2072
2073        Partitions are handled in the same way as for IDE
2074        disks (see major number 3) except that the limit on
2075        partitions is 15.
2076
2077129 block SCSI disk devices (144-159)
2078                  0 = /dev/sdeo 145th SCSI disk whole disk
2079                 16 = /dev/sdep 146th SCSI disk whole disk
2080                 32 = /dev/sdeq 147th SCSI disk whole disk
2081                    ...
2082                240 = /dev/sdfd 160th SCSI disk whole disk
2083
2084        Partitions are handled in the same way as for IDE
2085        disks (see major number 3) except that the limit on
2086        partitions is 15.
2087
2088130 char (Misc devices)
2089
2090130 block SCSI disk devices (160-175)
2091                  0 = /dev/sdfe 161st SCSI disk whole disk
2092                 16 = /dev/sdff 162nd SCSI disk whole disk
2093                 32 = /dev/sdfg 163rd SCSI disk whole disk
2094                    ...
2095                240 = /dev/sdft 176th SCSI disk whole disk
2096
2097        Partitions are handled in the same way as for IDE
2098        disks (see major number 3) except that the limit on
2099        partitions is 15.
2100
2101131 block SCSI disk devices (176-191)
2102                  0 = /dev/sdfu 177th SCSI disk whole disk
2103                 16 = /dev/sdfv 178th SCSI disk whole disk
2104                 32 = /dev/sdfw 179th SCSI disk whole disk
2105                    ...
2106                240 = /dev/sdgj 192nd SCSI disk whole disk
2107
2108        Partitions are handled in the same way as for IDE
2109        disks (see major number 3) except that the limit on
2110        partitions is 15.
2111
2112132 block SCSI disk devices (192-207)
2113                  0 = /dev/sdgk 193rd SCSI disk whole disk
2114                 16 = /dev/sdgl 194th SCSI disk whole disk
2115                 32 = /dev/sdgm 195th SCSI disk whole disk
2116                    ...
2117                240 = /dev/sdgz 208th SCSI disk whole disk
2118
2119        Partitions are handled in the same way as for IDE
2120        disks (see major number 3) except that the limit on
2121        partitions is 15.
2122
2123133 block SCSI disk devices (208-223)
2124                  0 = /dev/sdha 209th SCSI disk whole disk
2125                 16 = /dev/sdhb 210th SCSI disk whole disk
2126                 32 = /dev/sdhc 211th SCSI disk whole disk
2127                    ...
2128                240 = /dev/sdhp 224th SCSI disk whole disk
2129
2130        Partitions are handled in the same way as for IDE
2131        disks (see major number 3) except that the limit on
2132        partitions is 15.
2133
2134134 block SCSI disk devices (224-239)
2135                  0 = /dev/sdhq 225th SCSI disk whole disk
2136                 16 = /dev/sdhr 226th SCSI disk whole disk
2137                 32 = /dev/sdhs 227th SCSI disk whole disk
2138                    ...
2139                240 = /dev/sdif 240th SCSI disk whole disk
2140
2141        Partitions are handled in the same way as for IDE
2142        disks (see major number 3) except that the limit on
2143        partitions is 15.
2144
2145135 block SCSI disk devices (240-255)
2146                  0 = /dev/sdig 241st SCSI disk whole disk
2147                 16 = /dev/sdih 242nd SCSI disk whole disk
2148                 32 = /dev/sdih 243rd SCSI disk whole disk
2149                    ...
2150                240 = /dev/sdiv 256th SCSI disk whole disk
2151
2152        Partitions are handled in the same way as for IDE
2153        disks (see major number 3) except that the limit on
2154        partitions is 15.
2155
2156136-143 char Unix98 PTY slaves
2157          0 = /dev/pts/0 First Unix98 pseudo-TTY
2158          1 = /dev/pts/1 Second Unix98 pseudo-TTY
2159            ...
2160
2161        These device nodes are automatically generated with
2162        the proper permissions and modes by mounting the
2163        devpts filesystem onto /dev/pts with the appropriate
2164        mount options (distribution dependent, however, on
2165        *most* distributions the appropriate options are
2166        "mode=0620,gid=<gid of the "tty" group>".)
2167
2168136 block Mylex DAC960 PCI RAID controller; ninth controller
2169          0 = /dev/rd/c8d0 First disk, whole disk
2170          8 = /dev/rd/c8d1 Second disk, whole disk
2171            ...
2172        248 = /dev/rd/c8d31 32nd disk, whole disk
2173
2174        Partitions are handled as for major 48.
2175
2176137 block Mylex DAC960 PCI RAID controller; tenth controller
2177          0 = /dev/rd/c9d0 First disk, whole disk
2178          8 = /dev/rd/c9d1 Second disk, whole disk
2179            ...
2180        248 = /dev/rd/c9d31 32nd disk, whole disk
2181
2182        Partitions are handled as for major 48.
2183
2184138 block Mylex DAC960 PCI RAID controller; eleventh controller
2185          0 = /dev/rd/c10d0 First disk, whole disk
2186          8 = /dev/rd/c10d1 Second disk, whole disk
2187            ...
2188        248 = /dev/rd/c10d31 32nd disk, whole disk
2189
2190        Partitions are handled as for major 48.
2191
2192139 block Mylex DAC960 PCI RAID controller; twelfth controller
2193          0 = /dev/rd/c11d0 First disk, whole disk
2194          8 = /dev/rd/c11d1 Second disk, whole disk
2195            ...
2196        248 = /dev/rd/c11d31 32nd disk, whole disk
2197
2198        Partitions are handled as for major 48.
2199
2200140 block Mylex DAC960 PCI RAID controller; thirteenth controller
2201          0 = /dev/rd/c12d0 First disk, whole disk
2202          8 = /dev/rd/c12d1 Second disk, whole disk
2203            ...
2204        248 = /dev/rd/c12d31 32nd disk, whole disk
2205
2206        Partitions are handled as for major 48.
2207
2208141 block Mylex DAC960 PCI RAID controller; fourteenth controller
2209          0 = /dev/rd/c13d0 First disk, whole disk
2210          8 = /dev/rd/c13d1 Second disk, whole disk
2211            ...
2212        248 = /dev/rd/c13d31 32nd disk, whole disk
2213
2214        Partitions are handled as for major 48.
2215
2216142 block Mylex DAC960 PCI RAID controller; fifteenth controller
2217          0 = /dev/rd/c14d0 First disk, whole disk
2218          8 = /dev/rd/c14d1 Second disk, whole disk
2219            ...
2220        248 = /dev/rd/c14d31 32nd disk, whole disk
2221
2222        Partitions are handled as for major 48.
2223
2224143 block Mylex DAC960 PCI RAID controller; sixteenth controller
2225          0 = /dev/rd/c15d0 First disk, whole disk
2226          8 = /dev/rd/c15d1 Second disk, whole disk
2227            ...
2228        248 = /dev/rd/c15d31 32nd disk, whole disk
2229
2230        Partitions are handled as for major 48.
2231
2232144 char Encapsulated PPP
2233          0 = /dev/pppox0 First PPP over Ethernet
2234            ...
2235         63 = /dev/pppox63 64th PPP over Ethernet
2236
2237        This is primarily used for ADSL.
2238
2239        The SST 5136-DN DeviceNet interface driver has been
2240        relocated to major 183 due to an unfortunate conflict.
2241
2242144 block Expansion Area #1 for more non-device (e.g. NFS) mounts
2243          0 = mounted device 256
2244        255 = mounted device 511
2245
2246145 char SAM9407-based soundcard
2247          0 = /dev/sam0_mixer
2248          1 = /dev/sam0_sequencer
2249          2 = /dev/sam0_midi00
2250          3 = /dev/sam0_dsp
2251          4 = /dev/sam0_audio
2252          6 = /dev/sam0_sndstat
2253         18 = /dev/sam0_midi01
2254         34 = /dev/sam0_midi02
2255         50 = /dev/sam0_midi03
2256         64 = /dev/sam1_mixer
2257            ...
2258        128 = /dev/sam2_mixer
2259            ...
2260        192 = /dev/sam3_mixer
2261            ...
2262
2263        Device functions match OSS, but offer a number of
2264        addons, which are sam9407 specific. OSS can be
2265        operated simultaneously, taking care of the codec.
2266
2267145 block Expansion Area #2 for more non-device (e.g. NFS) mounts
2268          0 = mounted device 512
2269        255 = mounted device 767
2270
2271146 char SYSTRAM SCRAMNet mirrored-memory network
2272          0 = /dev/scramnet0 First SCRAMNet device
2273          1 = /dev/scramnet1 Second SCRAMNet device
2274            ...
2275
2276146 block Expansion Area #3 for more non-device (e.g. NFS) mounts
2277          0 = mounted device 768
2278        255 = mounted device 1023
2279
2280147 char Aureal Semiconductor Vortex Audio device
2281          0 = /dev/aureal0 First Aureal Vortex
2282          1 = /dev/aureal1 Second Aureal Vortex
2283            ...
2284
2285147 block Distributed Replicated Block Device (DRBD)
2286          0 = /dev/drbd0 First DRBD device
2287          1 = /dev/drbd1 Second DRBD device
2288            ...
2289
2290148 char Technology Concepts serial card
2291          0 = /dev/ttyT0 First TCL port
2292          1 = /dev/ttyT1 Second TCL port
2293            ...
2294
2295149 char Technology Concepts serial card - alternate devices
2296          0 = /dev/cut0 Callout device for ttyT0
2297          1 = /dev/cut0 Callout device for ttyT1
2298            ...
2299
2300150 char Real-Time Linux FIFOs
2301          0 = /dev/rtf0 First RTLinux FIFO
2302          1 = /dev/rtf1 Second RTLinux FIFO
2303            ...
2304
2305151 char DPT I2O SmartRaid V controller
2306          0 = /dev/dpti0 First DPT I2O adapter
2307          1 = /dev/dpti1 Second DPT I2O adapter
2308            ...
2309
2310152 char EtherDrive Control Device
2311          0 = /dev/etherd/ctl Connect/Disconnect an EtherDrive
2312          1 = /dev/etherd/err Monitor errors
2313          2 = /dev/etherd/raw Raw AoE packet monitor
2314
2315152 block EtherDrive Block Devices
2316          0 = /dev/etherd/0 EtherDrive 0
2317            ...
2318        255 = /dev/etherd/255 EtherDrive 255
2319
2320153 char SPI Bus Interface (sometimes referred to as MicroWire)
2321          0 = /dev/spi0 First SPI device on the bus
2322          1 = /dev/spi1 Second SPI device on the bus
2323            ...
2324         15 = /dev/spi15 Sixteenth SPI device on the bus
2325
2326153 block Enhanced Metadisk RAID (EMD) storage units
2327          0 = /dev/emd/0 First unit
2328          1 = /dev/emd/0p1 Partition 1 on First unit
2329          2 = /dev/emd/0p2 Partition 2 on First unit
2330            ...
2331         15 = /dev/emd/0p15 Partition 15 on First unit
2332
2333         16 = /dev/emd/1 Second unit
2334         32 = /dev/emd/2 Third unit
2335            ...
2336        240 = /dev/emd/15 Sixteenth unit
2337
2338        Partitions are handled in the same way as for IDE
2339        disks (see major number 3) except that the limit on
2340        partitions is 15.
2341
2342154 char Specialix RIO serial card
2343          0 = /dev/ttySR0 First RIO port
2344            ...
2345        255 = /dev/ttySR255 256th RIO port
2346
2347155 char Specialix RIO serial card - alternate devices
2348          0 = /dev/cusr0 Callout device for ttySR0
2349            ...
2350        255 = /dev/cusr255 Callout device for ttySR255
2351
2352156 char Specialix RIO serial card
2353          0 = /dev/ttySR256 257th RIO port
2354            ...
2355        255 = /dev/ttySR511 512th RIO port
2356
2357157 char Specialix RIO serial card - alternate devices
2358          0 = /dev/cusr256 Callout device for ttySR256
2359            ...
2360        255 = /dev/cusr511 Callout device for ttySR511
2361
2362158 char Dialogic GammaLink fax driver
2363          0 = /dev/gfax0 GammaLink channel 0
2364          1 = /dev/gfax1 GammaLink channel 1
2365            ...
2366
2367159 char RESERVED
2368
2369159 block RESERVED
2370
2371160 char General Purpose Instrument Bus (GPIB)
2372          0 = /dev/gpib0 First GPIB bus
2373          1 = /dev/gpib1 Second GPIB bus
2374            ...
2375
2376160 block Carmel 8-port SATA Disks on First Controller
2377          0 = /dev/carmel/0 SATA disk 0 whole disk
2378          1 = /dev/carmel/0p1 SATA disk 0 partition 1
2379            ...
2380         31 = /dev/carmel/0p31 SATA disk 0 partition 31
2381
2382         32 = /dev/carmel/1 SATA disk 1 whole disk
2383         64 = /dev/carmel/2 SATA disk 2 whole disk
2384            ...
2385        224 = /dev/carmel/7 SATA disk 7 whole disk
2386
2387        Partitions are handled in the same way as for IDE
2388        disks (see major number 3) except that the limit on
2389        partitions is 31.
2390
2391161 char IrCOMM devices (IrDA serial/parallel emulation)
2392          0 = /dev/ircomm0 First IrCOMM device
2393          1 = /dev/ircomm1 Second IrCOMM device
2394            ...
2395         16 = /dev/irlpt0 First IrLPT device
2396         17 = /dev/irlpt1 Second IrLPT device
2397            ...
2398
2399161 block Carmel 8-port SATA Disks on Second Controller
2400          0 = /dev/carmel/8 SATA disk 8 whole disk
2401          1 = /dev/carmel/8p1 SATA disk 8 partition 1
2402            ...
2403         31 = /dev/carmel/8p31 SATA disk 8 partition 31
2404
2405         32 = /dev/carmel/9 SATA disk 9 whole disk
2406         64 = /dev/carmel/10 SATA disk 10 whole disk
2407            ...
2408        224 = /dev/carmel/15 SATA disk 15 whole disk
2409
2410        Partitions are handled in the same way as for IDE
2411        disks (see major number 3) except that the limit on
2412        partitions is 31.
2413
2414162 char Raw block device interface
2415          0 = /dev/rawctl Raw I/O control device
2416          1 = /dev/raw/raw1 First raw I/O device
2417          2 = /dev/raw/raw2 Second raw I/O device
2418            ...
2419                 max minor number of raw device is set by kernel config
2420                 MAX_RAW_DEVS or raw module parameter 'max_raw_devs'
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
2565180 block USB block devices
2566          0 = /dev/uba First USB block device
2567          8 = /dev/ubb Second USB block device
2568         16 = /dev/ubc Third USB block device
2569             ...
2570
2571181 char Conrad Electronic parallel port radio clocks
2572          0 = /dev/pcfclock0 First Conrad radio clock
2573          1 = /dev/pcfclock1 Second Conrad radio clock
2574            ...
2575
2576182 char Picture Elements THR2 binarizer
2577          0 = /dev/pethr0 First THR2 board
2578          1 = /dev/pethr1 Second THR2 board
2579            ...
2580
2581183 char SST 5136-DN DeviceNet interface
2582          0 = /dev/ss5136dn0 First DeviceNet interface
2583          1 = /dev/ss5136dn1 Second DeviceNet interface
2584            ...
2585
2586        This device used to be assigned to major number 144.
2587        It had to be moved due to an unfortunate conflict.
2588
2589184 char Picture Elements' video simulator/sender
2590          0 = /dev/pevss0 First sender board
2591          1 = /dev/pevss1 Second sender board
2592            ...
2593
2594185 char InterMezzo high availability file system
2595          0 = /dev/intermezzo0 First cache manager
2596          1 = /dev/intermezzo1 Second cache manager
2597            ...
2598
2599        See http://web.archive.org/web/20080115195241/
2600        http://inter-mezzo.org/index.html
2601
2602186 char Object-based storage control device
2603          0 = /dev/obd0 First obd control device
2604          1 = /dev/obd1 Second obd control device
2605            ...
2606
2607        See ftp://ftp.lustre.org/pub/obd for code and information.
2608
2609187 char DESkey hardware encryption device
2610          0 = /dev/deskey0 First DES key
2611          1 = /dev/deskey1 Second DES key
2612            ...
2613
2614188 char USB serial converters
2615          0 = /dev/ttyUSB0 First USB serial converter
2616          1 = /dev/ttyUSB1 Second USB serial converter
2617            ...
2618
2619189 char USB serial converters - alternate devices
2620          0 = /dev/cuusb0 Callout device for ttyUSB0
2621          1 = /dev/cuusb1 Callout device for ttyUSB1
2622            ...
2623
2624190 char Kansas City tracker/tuner card
2625          0 = /dev/kctt0 First KCT/T card
2626          1 = /dev/kctt1 Second KCT/T card
2627            ...
2628
2629191 char Reserved for PCMCIA
2630
2631192 char Kernel profiling interface
2632          0 = /dev/profile Profiling control device
2633          1 = /dev/profile0 Profiling device for CPU 0
2634          2 = /dev/profile1 Profiling device for CPU 1
2635            ...
2636
2637193 char Kernel event-tracing interface
2638          0 = /dev/trace Tracing control device
2639          1 = /dev/trace0 Tracing device for CPU 0
2640          2 = /dev/trace1 Tracing device for CPU 1
2641            ...
2642
2643194 char linVideoStreams (LINVS)
2644          0 = /dev/mvideo/status0 Video compression status
2645          1 = /dev/mvideo/stream0 Video stream
2646          2 = /dev/mvideo/frame0 Single compressed frame
2647          3 = /dev/mvideo/rawframe0 Raw uncompressed frame
2648          4 = /dev/mvideo/codec0 Direct codec access
2649          5 = /dev/mvideo/video4linux0 Video4Linux compatibility
2650
2651         16 = /dev/mvideo/status1 Second device
2652            ...
2653         32 = /dev/mvideo/status2 Third device
2654            ...
2655            ...
2656        240 = /dev/mvideo/status15 16th device
2657            ...
2658
2659195 char Nvidia graphics devices
2660          0 = /dev/nvidia0 First Nvidia card
2661          1 = /dev/nvidia1 Second Nvidia card
2662            ...
2663        255 = /dev/nvidiactl Nvidia card control device
2664
2665196 char Tormenta T1 card
2666          0 = /dev/tor/0 Master control channel for all cards
2667          1 = /dev/tor/1 First DS0
2668          2 = /dev/tor/2 Second DS0
2669            ...
2670         48 = /dev/tor/48 48th DS0
2671         49 = /dev/tor/49 First pseudo-channel
2672         50 = /dev/tor/50 Second pseudo-channel
2673            ...
2674
2675197 char OpenTNF tracing facility
2676          0 = /dev/tnf/t0 Trace 0 data extraction
2677          1 = /dev/tnf/t1 Trace 1 data extraction
2678            ...
2679        128 = /dev/tnf/status Tracing facility status
2680        130 = /dev/tnf/trace Tracing device
2681
2682198 char Total Impact TPMP2 quad coprocessor PCI card
2683          0 = /dev/tpmp2/0 First card
2684          1 = /dev/tpmp2/1 Second card
2685            ...
2686
2687199 char Veritas volume manager (VxVM) volumes
2688          0 = /dev/vx/rdsk/*/* First volume
2689          1 = /dev/vx/rdsk/*/* Second volume
2690            ...
2691
2692199 block Veritas volume manager (VxVM) volumes
2693          0 = /dev/vx/dsk/*/* First volume
2694          1 = /dev/vx/dsk/*/* Second volume
2695            ...
2696
2697        The namespace in these directories is maintained by
2698        the user space VxVM software.
2699
2700200 char Veritas VxVM configuration interface
2701                  0 = /dev/vx/config Configuration access node
2702                  1 = /dev/vx/trace Volume i/o trace access node
2703                  2 = /dev/vx/iod Volume i/o daemon access node
2704                  3 = /dev/vx/info Volume information access node
2705                  4 = /dev/vx/task Volume tasks access node
2706                  5 = /dev/vx/taskmon Volume tasks monitor daemon
2707
2708201 char Veritas VxVM dynamic multipathing driver
2709          0 = /dev/vx/rdmp/* First multipath device
2710          1 = /dev/vx/rdmp/* Second multipath device
2711            ...
2712201 block Veritas VxVM dynamic multipathing driver
2713          0 = /dev/vx/dmp/* First multipath device
2714          1 = /dev/vx/dmp/* Second multipath device
2715            ...
2716
2717        The namespace in these directories is maintained by
2718        the user space VxVM software.
2719
2720202 char CPU model-specific registers
2721          0 = /dev/cpu/0/msr MSRs on CPU 0
2722          1 = /dev/cpu/1/msr MSRs on CPU 1
2723            ...
2724
2725202 block Xen Virtual Block Device
2726          0 = /dev/xvda First Xen VBD whole disk
2727          16 = /dev/xvdb Second Xen VBD whole disk
2728          32 = /dev/xvdc Third Xen VBD whole disk
2729            ...
2730          240 = /dev/xvdp Sixteenth Xen VBD whole disk
2731
2732                Partitions are handled in the same way as for IDE
2733                disks (see major number 3) except that the limit on
2734                partitions is 15.
2735
2736203 char CPU CPUID information
2737          0 = /dev/cpu/0/cpuid CPUID on CPU 0
2738          1 = /dev/cpu/1/cpuid CPUID on CPU 1
2739            ...
2740
2741204 char Low-density serial ports
2742          0 = /dev/ttyLU0 LinkUp Systems L72xx UART - port 0
2743          1 = /dev/ttyLU1 LinkUp Systems L72xx UART - port 1
2744          2 = /dev/ttyLU2 LinkUp Systems L72xx UART - port 2
2745          3 = /dev/ttyLU3 LinkUp Systems L72xx UART - port 3
2746          4 = /dev/ttyFB0 Intel Footbridge (ARM)
2747          5 = /dev/ttySA0 StrongARM builtin serial port 0
2748          6 = /dev/ttySA1 StrongARM builtin serial port 1
2749          7 = /dev/ttySA2 StrongARM builtin serial port 2
2750          8 = /dev/ttySC0 SCI serial port (SuperH) - port 0
2751          9 = /dev/ttySC1 SCI serial port (SuperH) - port 1
2752         10 = /dev/ttySC2 SCI serial port (SuperH) - port 2
2753         11 = /dev/ttySC3 SCI serial port (SuperH) - port 3
2754         12 = /dev/ttyFW0 Firmware console - port 0
2755         13 = /dev/ttyFW1 Firmware console - port 1
2756         14 = /dev/ttyFW2 Firmware console - port 2
2757         15 = /dev/ttyFW3 Firmware console - port 3
2758         16 = /dev/ttyAM0 ARM "AMBA" serial port 0
2759            ...
2760         31 = /dev/ttyAM15 ARM "AMBA" serial port 15
2761         32 = /dev/ttyDB0 DataBooster serial port 0
2762            ...
2763         39 = /dev/ttyDB7 DataBooster serial port 7
2764         40 = /dev/ttySG0 SGI Altix console port
2765         41 = /dev/ttySMX0 Motorola i.MX - port 0
2766         42 = /dev/ttySMX1 Motorola i.MX - port 1
2767         43 = /dev/ttySMX2 Motorola i.MX - port 2
2768         44 = /dev/ttyMM0 Marvell MPSC - port 0
2769         45 = /dev/ttyMM1 Marvell MPSC - port 1
2770         46 = /dev/ttyCPM0 PPC CPM (SCC or SMC) - port 0
2771            ...
2772         47 = /dev/ttyCPM5 PPC CPM (SCC or SMC) - port 5
2773         50 = /dev/ttyIOC0 Altix serial card
2774            ...
2775         81 = /dev/ttyIOC31 Altix serial card
2776         82 = /dev/ttyVR0 NEC VR4100 series SIU
2777         83 = /dev/ttyVR1 NEC VR4100 series DSIU
2778         84 = /dev/ttyIOC84 Altix ioc4 serial card
2779            ...
2780         115 = /dev/ttyIOC115 Altix ioc4 serial card
2781         116 = /dev/ttySIOC0 Altix ioc3 serial card
2782            ...
2783         147 = /dev/ttySIOC31 Altix ioc3 serial card
2784         148 = /dev/ttyPSC0 PPC PSC - port 0
2785            ...
2786         153 = /dev/ttyPSC5 PPC PSC - port 5
2787         154 = /dev/ttyAT0 ATMEL serial port 0
2788            ...
2789         169 = /dev/ttyAT15 ATMEL serial port 15
2790         170 = /dev/ttyNX0 Hilscher netX serial port 0
2791            ...
2792         185 = /dev/ttyNX15 Hilscher netX serial port 15
2793         186 = /dev/ttyJ0 JTAG1 DCC protocol based serial port emulation
2794         187 = /dev/ttyUL0 Xilinx uartlite - port 0
2795            ...
2796         190 = /dev/ttyUL3 Xilinx uartlite - port 3
2797         191 = /dev/xvc0 Xen virtual console - port 0
2798         192 = /dev/ttyPZ0 pmac_zilog - port 0
2799            ...
2800         195 = /dev/ttyPZ3 pmac_zilog - port 3
2801         196 = /dev/ttyTX0 TX39/49 serial port 0
2802            ...
2803         204 = /dev/ttyTX7 TX39/49 serial port 7
2804         205 = /dev/ttySC0 SC26xx serial port 0
2805         206 = /dev/ttySC1 SC26xx serial port 1
2806         207 = /dev/ttySC2 SC26xx serial port 2
2807         208 = /dev/ttySC3 SC26xx serial port 3
2808         209 = /dev/ttyMAX0 MAX3100 serial port 0
2809         210 = /dev/ttyMAX1 MAX3100 serial port 1
2810         211 = /dev/ttyMAX2 MAX3100 serial port 2
2811         212 = /dev/ttyMAX3 MAX3100 serial port 3
2812
2813205 char Low-density serial ports (alternate device)
2814          0 = /dev/culu0 Callout device for ttyLU0
2815          1 = /dev/culu1 Callout device for ttyLU1
2816          2 = /dev/culu2 Callout device for ttyLU2
2817          3 = /dev/culu3 Callout device for ttyLU3
2818          4 = /dev/cufb0 Callout device for ttyFB0
2819          5 = /dev/cusa0 Callout device for ttySA0
2820          6 = /dev/cusa1 Callout device for ttySA1
2821          7 = /dev/cusa2 Callout device for ttySA2
2822          8 = /dev/cusc0 Callout device for ttySC0
2823          9 = /dev/cusc1 Callout device for ttySC1
2824         10 = /dev/cusc2 Callout device for ttySC2
2825         11 = /dev/cusc3 Callout device for ttySC3
2826         12 = /dev/cufw0 Callout device for ttyFW0
2827         13 = /dev/cufw1 Callout device for ttyFW1
2828         14 = /dev/cufw2 Callout device for ttyFW2
2829         15 = /dev/cufw3 Callout device for ttyFW3
2830         16 = /dev/cuam0 Callout device for ttyAM0
2831            ...
2832         31 = /dev/cuam15 Callout device for ttyAM15
2833         32 = /dev/cudb0 Callout device for ttyDB0
2834            ...
2835         39 = /dev/cudb7 Callout device for ttyDB7
2836         40 = /dev/cusg0 Callout device for ttySG0
2837         41 = /dev/ttycusmx0 Callout device for ttySMX0
2838         42 = /dev/ttycusmx1 Callout device for ttySMX1
2839         43 = /dev/ttycusmx2 Callout device for ttySMX2
2840         46 = /dev/cucpm0 Callout device for ttyCPM0
2841            ...
2842         49 = /dev/cucpm5 Callout device for ttyCPM5
2843         50 = /dev/cuioc40 Callout device for ttyIOC40
2844            ...
2845         81 = /dev/cuioc431 Callout device for ttyIOC431
2846         82 = /dev/cuvr0 Callout device for ttyVR0
2847         83 = /dev/cuvr1 Callout device for ttyVR1
2848
2849206 char OnStream SC-x0 tape devices
2850          0 = /dev/osst0 First OnStream SCSI tape, mode 0
2851          1 = /dev/osst1 Second OnStream SCSI tape, mode 0
2852            ...
2853         32 = /dev/osst0l First OnStream SCSI tape, mode 1
2854         33 = /dev/osst1l Second OnStream SCSI tape, mode 1
2855            ...
2856         64 = /dev/osst0m First OnStream SCSI tape, mode 2
2857         65 = /dev/osst1m Second OnStream SCSI tape, mode 2
2858            ...
2859         96 = /dev/osst0a First OnStream SCSI tape, mode 3
2860         97 = /dev/osst1a Second OnStream SCSI tape, mode 3
2861            ...
2862        128 = /dev/nosst0 No rewind version of /dev/osst0
2863        129 = /dev/nosst1 No rewind version of /dev/osst1
2864            ...
2865        160 = /dev/nosst0l No rewind version of /dev/osst0l
2866        161 = /dev/nosst1l No rewind version of /dev/osst1l
2867            ...
2868        192 = /dev/nosst0m No rewind version of /dev/osst0m
2869        193 = /dev/nosst1m No rewind version of /dev/osst1m
2870            ...
2871        224 = /dev/nosst0a No rewind version of /dev/osst0a
2872        225 = /dev/nosst1a No rewind version of /dev/osst1a
2873            ...
2874
2875        The OnStream SC-x0 SCSI tapes do not support the
2876        standard SCSI SASD command set and therefore need
2877        their own driver "osst". Note that the IDE, USB (and
2878        maybe ParPort) versions may be driven via ide-scsi or
2879        usb-storage SCSI emulation and this osst device and
2880        driver as well. The ADR-x0 drives are QIC-157
2881        compliant and don't need osst.
2882
2883207 char Compaq ProLiant health feature indicate
2884          0 = /dev/cpqhealth/cpqw Redirector interface
2885          1 = /dev/cpqhealth/crom EISA CROM
2886          2 = /dev/cpqhealth/cdt Data Table
2887          3 = /dev/cpqhealth/cevt Event Log
2888          4 = /dev/cpqhealth/casr Automatic Server Recovery
2889          5 = /dev/cpqhealth/cecc ECC Memory
2890          6 = /dev/cpqhealth/cmca Machine Check Architecture
2891          7 = /dev/cpqhealth/ccsm Deprecated CDT
2892          8 = /dev/cpqhealth/cnmi NMI Handling
2893          9 = /dev/cpqhealth/css Sideshow Management
2894         10 = /dev/cpqhealth/cram CMOS interface
2895         11 = /dev/cpqhealth/cpci PCI IRQ interface
2896
2897208 char User space serial ports
2898          0 = /dev/ttyU0 First user space serial port
2899          1 = /dev/ttyU1 Second user space serial port
2900            ...
2901
2902209 char User space serial ports (alternate devices)
2903          0 = /dev/cuu0 Callout device for ttyU0
2904          1 = /dev/cuu1 Callout device for ttyU1
2905            ...
2906
2907210 char SBE, Inc. sync/async serial card
2908          0 = /dev/sbei/wxcfg0 Configuration device for board 0
2909          1 = /dev/sbei/dld0 Download device for board 0
2910          2 = /dev/sbei/wan00 WAN device, port 0, board 0
2911          3 = /dev/sbei/wan01 WAN device, port 1, board 0
2912          4 = /dev/sbei/wan02 WAN device, port 2, board 0
2913          5 = /dev/sbei/wan03 WAN device, port 3, board 0
2914          6 = /dev/sbei/wanc00 WAN clone device, port 0, board 0
2915          7 = /dev/sbei/wanc01 WAN clone device, port 1, board 0
2916          8 = /dev/sbei/wanc02 WAN clone device, port 2, board 0
2917          9 = /dev/sbei/wanc03 WAN clone device, port 3, board 0
2918         10 = /dev/sbei/wxcfg1 Configuration device for board 1
2919         11 = /dev/sbei/dld1 Download device for board 1
2920         12 = /dev/sbei/wan10 WAN device, port 0, board 1
2921         13 = /dev/sbei/wan11 WAN device, port 1, board 1
2922         14 = /dev/sbei/wan12 WAN device, port 2, board 1
2923         15 = /dev/sbei/wan13 WAN device, port 3, board 1
2924         16 = /dev/sbei/wanc10 WAN clone device, port 0, board 1
2925         17 = /dev/sbei/wanc11 WAN clone device, port 1, board 1
2926         18 = /dev/sbei/wanc12 WAN clone device, port 2, board 1
2927         19 = /dev/sbei/wanc13 WAN clone device, port 3, board 1
2928            ...
2929
2930        Yes, each board is really spaced 10 (decimal) apart.
2931
2932211 char Addinum CPCI1500 digital I/O card
2933          0 = /dev/addinum/cpci1500/0 First CPCI1500 card
2934          1 = /dev/addinum/cpci1500/1 Second CPCI1500 card
2935            ...
2936
2937212 char LinuxTV.org DVB driver subsystem
2938          0 = /dev/dvb/adapter0/video0 first video decoder of first card
2939          1 = /dev/dvb/adapter0/audio0 first audio decoder of first card
2940          2 = /dev/dvb/adapter0/sec0 (obsolete/unused)
2941          3 = /dev/dvb/adapter0/frontend0 first frontend device of first card
2942          4 = /dev/dvb/adapter0/demux0 first demux device of first card
2943          5 = /dev/dvb/adapter0/dvr0 first digital video recoder device of first card
2944          6 = /dev/dvb/adapter0/ca0 first common access port of first card
2945          7 = /dev/dvb/adapter0/net0 first network device of first card
2946          8 = /dev/dvb/adapter0/osd0 first on-screen-display device of first card
2947          9 = /dev/dvb/adapter0/video1 second video decoder of first card
2948            ...
2949         64 = /dev/dvb/adapter1/video0 first video decoder of second card
2950            ...
2951        128 = /dev/dvb/adapter2/video0 first video decoder of third card
2952            ...
2953        196 = /dev/dvb/adapter3/video0 first video decoder of fourth card
2954
2955216 char Bluetooth RFCOMM TTY devices
2956          0 = /dev/rfcomm0 First Bluetooth RFCOMM TTY device
2957          1 = /dev/rfcomm1 Second Bluetooth RFCOMM TTY device
2958            ...
2959
2960217 char Bluetooth RFCOMM TTY devices (alternate devices)
2961          0 = /dev/curf0 Callout device for rfcomm0
2962          1 = /dev/curf1 Callout device for rfcomm1
2963            ...
2964
2965218 char The Logical Company bus Unibus/Qbus adapters
2966          0 = /dev/logicalco/bci/0 First bus adapter
2967          1 = /dev/logicalco/bci/1 First bus adapter
2968            ...
2969
2970219 char The Logical Company DCI-1300 digital I/O card
2971          0 = /dev/logicalco/dci1300/0 First DCI-1300 card
2972          1 = /dev/logicalco/dci1300/1 Second DCI-1300 card
2973            ...
2974
2975220 char Myricom Myrinet "GM" board
2976          0 = /dev/myricom/gm0 First Myrinet GM board
2977          1 = /dev/myricom/gmp0 First board "root access"
2978          2 = /dev/myricom/gm1 Second Myrinet GM board
2979          3 = /dev/myricom/gmp1 Second board "root access"
2980            ...
2981
2982221 char VME bus
2983          0 = /dev/bus/vme/m0 First master image
2984          1 = /dev/bus/vme/m1 Second master image
2985          2 = /dev/bus/vme/m2 Third master image
2986          3 = /dev/bus/vme/m3 Fourth master image
2987          4 = /dev/bus/vme/s0 First slave image
2988          5 = /dev/bus/vme/s1 Second slave image
2989          6 = /dev/bus/vme/s2 Third slave image
2990          7 = /dev/bus/vme/s3 Fourth slave image
2991          8 = /dev/bus/vme/ctl Control
2992
2993        It is expected that all VME bus drivers will use the
2994        same interface. For interface documentation see
2995        http://www.vmelinux.org/.
2996
2997224 char A2232 serial card
2998          0 = /dev/ttyY0 First A2232 port
2999          1 = /dev/ttyY1 Second A2232 port
3000            ...
3001
3002225 char A2232 serial card (alternate devices)
3003          0 = /dev/cuy0 Callout device for ttyY0
3004          1 = /dev/cuy1 Callout device for ttyY1
3005            ...
3006
3007226 char Direct Rendering Infrastructure (DRI)
3008          0 = /dev/dri/card0 First graphics card
3009          1 = /dev/dri/card1 Second graphics card
3010            ...
3011
3012227 char IBM 3270 terminal Unix tty access
3013          1 = /dev/3270/tty1 First 3270 terminal
3014          2 = /dev/3270/tty2 Seconds 3270 terminal
3015            ...
3016
3017228 char IBM 3270 terminal block-mode access
3018          0 = /dev/3270/tub Controlling interface
3019          1 = /dev/3270/tub1 First 3270 terminal
3020          2 = /dev/3270/tub2 Second 3270 terminal
3021            ...
3022
3023229 char IBM iSeries/pSeries virtual console
3024          0 = /dev/hvc0 First console port
3025          1 = /dev/hvc1 Second console port
3026            ...
3027
3028230 char IBM iSeries virtual tape
3029          0 = /dev/iseries/vt0 First virtual tape, mode 0
3030          1 = /dev/iseries/vt1 Second virtual tape, mode 0
3031            ...
3032         32 = /dev/iseries/vt0l First virtual tape, mode 1
3033         33 = /dev/iseries/vt1l Second virtual tape, mode 1
3034            ...
3035         64 = /dev/iseries/vt0m First virtual tape, mode 2
3036         65 = /dev/iseries/vt1m Second virtual tape, mode 2
3037            ...
3038         96 = /dev/iseries/vt0a First virtual tape, mode 3
3039         97 = /dev/iseries/vt1a Second virtual tape, mode 3
3040              ...
3041        128 = /dev/iseries/nvt0 First virtual tape, mode 0, no rewind
3042        129 = /dev/iseries/nvt1 Second virtual tape, mode 0, no rewind
3043            ...
3044        160 = /dev/iseries/nvt0l First virtual tape, mode 1, no rewind
3045        161 = /dev/iseries/nvt1l Second virtual tape, mode 1, no rewind
3046            ...
3047        192 = /dev/iseries/nvt0m First virtual tape, mode 2, no rewind
3048        193 = /dev/iseries/nvt1m Second virtual tape, mode 2, no rewind
3049            ...
3050        224 = /dev/iseries/nvt0a First virtual tape, mode 3, no rewind
3051        225 = /dev/iseries/nvt1a Second virtual tape, mode 3, no rewind
3052            ...
3053
3054        "No rewind" refers to the omission of the default
3055        automatic rewind on device close. The MTREW or MTOFFL
3056        ioctl()'s can be used to rewind the tape regardless of
3057        the device used to access it.
3058
3059231 char InfiniBand
3060        0 = /dev/infiniband/umad0
3061        1 = /dev/infiniband/umad1
3062          ...
3063        63 = /dev/infiniband/umad63 63rd InfiniBandMad device
3064        64 = /dev/infiniband/issm0 First InfiniBand IsSM device
3065        65 = /dev/infiniband/issm1 Second InfiniBand IsSM device
3066          ...
3067        127 = /dev/infiniband/issm63 63rd InfiniBand IsSM device
3068        128 = /dev/infiniband/uverbs0 First InfiniBand verbs device
3069        129 = /dev/infiniband/uverbs1 Second InfiniBand verbs device
3070          ...
3071        159 = /dev/infiniband/uverbs31 31st InfiniBand verbs device
3072
3073232 char Biometric Devices
3074        0 = /dev/biometric/sensor0/fingerprint first fingerprint sensor on first device
3075        1 = /dev/biometric/sensor0/iris first iris sensor on first device
3076        2 = /dev/biometric/sensor0/retina first retina sensor on first device
3077        3 = /dev/biometric/sensor0/voiceprint first voiceprint sensor on first device
3078        4 = /dev/biometric/sensor0/facial first facial sensor on first device
3079        5 = /dev/biometric/sensor0/hand first hand sensor on first device
3080          ...
3081        10 = /dev/biometric/sensor1/fingerprint first fingerprint sensor on second device
3082          ...
3083        20 = /dev/biometric/sensor2/fingerprint first fingerprint sensor on third device
3084          ...
3085
3086233 char PathScale InfiniPath interconnect
3087        0 = /dev/ipath Primary device for programs (any unit)
3088        1 = /dev/ipath0 Access specifically to unit 0
3089        2 = /dev/ipath1 Access specifically to unit 1
3090          ...
3091        4 = /dev/ipath3 Access specifically to unit 3
3092        129 = /dev/ipath_sma Device used by Subnet Management Agent
3093        130 = /dev/ipath_diag Device used by diagnostics programs
3094
3095234-239 UNASSIGNED
3096
3097240-254 char LOCAL/EXPERIMENTAL USE
3098
3099240-254 block LOCAL/EXPERIMENTAL USE
3100        Allocated for local/experimental use. For devices not
3101        assigned official numbers, these ranges should be
3102        used in order to avoid conflicting with future assignments.
3103
3104255 char RESERVED
3105
3106255 block RESERVED
3107
3108        This major is reserved to assist the expansion to a
3109        larger number space. No device nodes with this major
3110        should ever be created on the filesystem.
3111        (This is probably not true anymore, but I'll leave it
3112        for now /Torben)
3113
3114---LARGE MAJORS!!!!!---
3115
3116256 char Equinox SST multi-port serial boards
3117           0 = /dev/ttyEQ0 First serial port on first Equinox SST board
3118         127 = /dev/ttyEQ127 Last serial port on first Equinox SST board
3119         128 = /dev/ttyEQ128 First serial port on second Equinox SST board
3120          ...
3121        1027 = /dev/ttyEQ1027 Last serial port on eighth Equinox SST board
3122
3123256 block Resident Flash Disk Flash Translation Layer
3124          0 = /dev/rfda First RFD FTL layer
3125         16 = /dev/rfdb Second RFD FTL layer
3126          ...
3127        240 = /dev/rfdp 16th RFD FTL layer
3128
3129257 char Phoenix Technologies Cryptographic Services Driver
3130          0 = /dev/ptlsec Crypto Services Driver
3131
3132257 block SSFDC Flash Translation Layer filesystem
3133          0 = /dev/ssfdca First SSFDC layer
3134          8 = /dev/ssfdcb Second SSFDC layer
3135         16 = /dev/ssfdcc Third SSFDC layer
3136         24 = /dev/ssfdcd 4th SSFDC layer
3137         32 = /dev/ssfdce 5th SSFDC layer
3138         40 = /dev/ssfdcf 6th SSFDC layer
3139         48 = /dev/ssfdcg 7th SSFDC layer
3140         56 = /dev/ssfdch 8th SSFDC layer
3141
3142258 block ROM/Flash read-only translation layer
3143          0 = /dev/blockrom0 First ROM card's translation layer interface
3144          1 = /dev/blockrom1 Second ROM card's translation layer interface
3145          ...
3146
3147259 block Block Extended Major
3148          Used dynamically to hold additional partition minor
3149          numbers and allow large numbers of partitions per device
3150
3151259 char FPGA configuration interfaces
3152          0 = /dev/icap0 First Xilinx internal configuration
3153          1 = /dev/icap1 Second Xilinx internal configuration
3154
3155260 char OSD (Object-based-device) SCSI Device
3156          0 = /dev/osd0 First OSD Device
3157          1 = /dev/osd1 Second OSD Device
3158          ...
3159          255 = /dev/osd255 256th OSD Device
3160
3161 **** ADDITIONAL /dev DIRECTORY ENTRIES
3162
3163This section details additional entries that should or may exist in
3164the /dev directory. It is preferred that symbolic links use the same
3165form (absolute or relative) as is indicated here. Links are
3166classified as "hard" or "symbolic" depending on the preferred type of
3167link; if possible, the indicated type of link should be used.
3168
3169
3170    Compulsory links
3171
3172These links should exist on all systems:
3173
3174/dev/fd /proc/self/fd symbolic File descriptors
3175/dev/stdin fd/0 symbolic stdin file descriptor
3176/dev/stdout fd/1 symbolic stdout file descriptor
3177/dev/stderr fd/2 symbolic stderr file descriptor
3178/dev/nfsd socksys symbolic Required by iBCS-2
3179/dev/X0R null symbolic Required by iBCS-2
3180
3181Note: /dev/X0R is <letter X>-<digit 0>-<letter R>.
3182
3183    Recommended links
3184
3185It is recommended that these links exist on all systems:
3186
3187/dev/core /proc/kcore symbolic Backward compatibility
3188/dev/ramdisk ram0 symbolic Backward compatibility
3189/dev/ftape qft0 symbolic Backward compatibility
3190/dev/bttv0 video0 symbolic Backward compatibility
3191/dev/radio radio0 symbolic Backward compatibility
3192/dev/i2o* /dev/i2o/* symbolic Backward compatibility
3193/dev/scd? sr? hard Alternate SCSI CD-ROM name
3194
3195    Locally defined links
3196
3197The following links may be established locally to conform to the
3198configuration of the system. This is merely a tabulation of existing
3199practice, and does not constitute a recommendation. However, if they
3200exist, they should have the following uses.
3201
3202/dev/mouse mouse port symbolic Current mouse device
3203/dev/tape tape device symbolic Current tape device
3204/dev/cdrom CD-ROM device symbolic Current CD-ROM device
3205/dev/cdwriter CD-writer symbolic Current CD-writer device
3206/dev/scanner scanner symbolic Current scanner device
3207/dev/modem modem port symbolic Current dialout device
3208/dev/root root device symbolic Current root filesystem
3209/dev/swap swap device symbolic Current swap device
3210
3211/dev/modem should not be used for a modem which supports dialin as
3212well as dialout, as it tends to cause lock file problems. If it
3213exists, /dev/modem should point to the appropriate primary TTY device
3214(the use of the alternate callout devices is deprecated).
3215
3216For SCSI devices, /dev/tape and /dev/cdrom should point to the
3217``cooked'' devices (/dev/st* and /dev/sr*, respectively), whereas
3218/dev/cdwriter and /dev/scanner should point to the appropriate generic
3219SCSI devices (/dev/sg*).
3220
3221/dev/mouse may point to a primary serial TTY device, a hardware mouse
3222device, or a socket for a mouse driver program (e.g. /dev/gpmdata).
3223
3224    Sockets and pipes
3225
3226Non-transient sockets and named pipes may exist in /dev. Common entries are:
3227
3228/dev/printer socket lpd local socket
3229/dev/log socket syslog local socket
3230/dev/gpmdata socket gpm mouse multiplexer
3231
3232    Mount points
3233
3234The following names are reserved for mounting special filesystems
3235under /dev. These special filesystems provide kernel interfaces that
3236cannot be provided with standard device nodes.
3237
3238/dev/pts devpts PTY slave filesystem
3239/dev/shm tmpfs POSIX shared memory maintenance access
3240
3241 **** TERMINAL DEVICES
3242
3243Terminal, or TTY devices are a special class of character devices. A
3244terminal device is any device that could act as a controlling terminal
3245for a session; this includes virtual consoles, serial ports, and
3246pseudoterminals (PTYs).
3247
3248All terminal devices share a common set of capabilities known as line
3249disciplines; these include the common terminal line discipline as well
3250as SLIP and PPP modes.
3251
3252All terminal devices are named similarly; this section explains the
3253naming and use of the various types of TTYs. Note that the naming
3254conventions include several historical warts; some of these are
3255Linux-specific, some were inherited from other systems, and some
3256reflect Linux outgrowing a borrowed convention.
3257
3258A hash mark (#) in a device name is used here to indicate a decimal
3259number without leading zeroes.
3260
3261    Virtual consoles and the console device
3262
3263Virtual consoles are full-screen terminal displays on the system video
3264monitor. Virtual consoles are named /dev/tty#, with numbering
3265starting at /dev/tty1; /dev/tty0 is the current virtual console.
3266/dev/tty0 is the device that should be used to access the system video
3267card on those architectures for which the frame buffer devices
3268(/dev/fb*) are not applicable. Do not use /dev/console
3269for this purpose.
3270
3271The console device, /dev/console, is the device to which system
3272messages should be sent, and on which logins should be permitted in
3273single-user mode. Starting with Linux 2.1.71, /dev/console is managed
3274by the kernel; for previous versions it should be a symbolic link to
3275either /dev/tty0, a specific virtual console such as /dev/tty1, or to
3276a serial port primary (tty*, not cu*) device, depending on the
3277configuration of the system.
3278
3279    Serial ports
3280
3281Serial ports are RS-232 serial ports and any device which simulates
3282one, either in hardware (such as internal modems) or in software (such
3283as the ISDN driver.) Under Linux, each serial ports has two device
3284names, the primary or callin device and the alternate or callout one.
3285Each kind of device is indicated by a different letter. For any
3286letter X, the names of the devices are /dev/ttyX# and /dev/cux#,
3287respectively; for historical reasons, /dev/ttyS# and /dev/ttyC#
3288correspond to /dev/cua# and /dev/cub#. In the future, it should be
3289expected that multiple letters will be used; all letters will be upper
3290case for the "tty" device (e.g. /dev/ttyDP#) and lower case for the
3291"cu" device (e.g. /dev/cudp#).
3292
3293The names /dev/ttyQ# and /dev/cuq# are reserved for local use.
3294
3295The alternate devices provide for kernel-based exclusion and somewhat
3296different defaults than the primary devices. Their main purpose is to
3297allow the use of serial ports with programs with no inherent or broken
3298support for serial ports. Their use is deprecated, and they may be
3299removed from a future version of Linux.
3300
3301Arbitration of serial ports is provided by the use of lock files with
3302the names /var/lock/LCK..ttyX#. The contents of the lock file should
3303be the PID of the locking process as an ASCII number.
3304
3305It is common practice to install links such as /dev/modem
3306which point to serial ports. In order to ensure proper locking in the
3307presence of these links, it is recommended that software chase
3308symlinks and lock all possible names; additionally, it is recommended
3309that a lock file be installed with the corresponding alternate
3310device. In order to avoid deadlocks, it is recommended that the locks
3311are acquired in the following order, and released in the reverse:
3312
3313    1. The symbolic link name, if any (/var/lock/LCK..modem)
3314    2. The "tty" name (/var/lock/LCK..ttyS2)
3315    3. The alternate device name (/var/lock/LCK..cua2)
3316
3317In the case of nested symbolic links, the lock files should be
3318installed in the order the symlinks are resolved.
3319
3320Under no circumstances should an application hold a lock while waiting
3321for another to be released. In addition, applications which attempt
3322to create lock files for the corresponding alternate device names
3323should take into account the possibility of being used on a non-serial
3324port TTY, for which no alternate device would exist.
3325
3326    Pseudoterminals (PTYs)
3327
3328Pseudoterminals, or PTYs, are used to create login sessions or provide
3329other capabilities requiring a TTY line discipline (including SLIP or
3330PPP capability) to arbitrary data-generation processes. Each PTY has
3331a master side, named /dev/pty[p-za-e][0-9a-f], and a slave side, named
3332/dev/tty[p-za-e][0-9a-f]. The kernel arbitrates the use of PTYs by
3333allowing each master side to be opened only once.
3334
3335Once the master side has been opened, the corresponding slave device
3336can be used in the same manner as any TTY device. The master and
3337slave devices are connected by the kernel, generating the equivalent
3338of a bidirectional pipe with TTY capabilities.
3339
3340Recent versions of the Linux kernels and GNU libc contain support for
3341the System V/Unix98 naming scheme for PTYs, which assigns a common
3342device, /dev/ptmx, to all the masters (opening it will automatically
3343give you a previously unassigned PTY) and a subdirectory, /dev/pts,
3344for the slaves; the slaves are named with decimal integers (/dev/pts/#
3345in our notation). This removes the problem of exhausting the
3346namespace and enables the kernel to automatically create the device
3347nodes for the slaves on demand using the "devpts" filesystem.
3348
3349

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