patch-2.3.40 linux/Documentation/kernel-parameters.txt
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- Lines: 619
- Date:
Tue Jan 11 11:32:32 2000
- Orig file:
v2.3.39/linux/Documentation/kernel-parameters.txt
- Orig date:
Mon Dec 20 18:48:21 1999
diff -u --recursive --new-file v2.3.39/linux/Documentation/kernel-parameters.txt linux/Documentation/kernel-parameters.txt
@@ -10,41 +10,41 @@
restrictions on the kernel for the said kernel parameter to be valid. The
restrictions referred to are that the relevant option is valid if:
- APIC APIC support is enabled.
- APM Advanced Power Management support is enabled.
- AX25 Appropriate AX.25 support is enabled.
- CD Appropriate CD support is enabled.
- EIDE EIDE/ATAPI support is enabled.
- FB The frame buffer device is enabled.
- HW Appropriate hardware is enabled.
- ISDN Appropriate ISDN support is enabled.
- JOY Appropriate joystick support is enabled.
- LP Printer support is enabled.
- LOOP Loopback device support is enabled.
- MCA MCA bus support is enabled.
- MDA The MDA console is enabled.
- MOUSE Appropriate mouse support is enabled.
- NET Appropriate network support is enabled.
- NFS Appropriate NFS support is enabled.
- PARIDE The ParIDE subsystem is enabled.
- PCI PCI bus support is enabled.
- PCMCIA The PCMCIA subsystem is enabled.
- PNP Plug & Play support is enabled.
- PPT Parallel port support is enabled.
- PS2 Appropriate PS/2 support is enabled.
- RAM RAMdisc support is enabled.
- SCSI Appropriate SCSI support is enabled.
- SERIAL Serial support is enabled.
- SMP The kernel is an SMP kernel.
- SOUND Appropriate sound system support is enabled.
- VGA The VGA console has been enabled.
- VT Virtual terminal support is enabled.
- XT IBM PC/XT MFM hard disk support is enabled.
+ APIC APIC support is enabled.
+ APM Advanced Power Management support is enabled.
+ AX25 Appropriate AX.25 support is enabled.
+ CD Appropriate CD support is enabled.
+ EIDE EIDE/ATAPI support is enabled.
+ FB The frame buffer device is enabled.
+ HW Appropriate hardware is enabled.
+ ISDN Appropriate ISDN support is enabled.
+ JOY Appropriate joystick support is enabled.
+ LP Printer support is enabled.
+ LOOP Loopback device support is enabled.
+ MCA MCA bus support is enabled.
+ MDA MDA console support is enabled.
+ MOUSE Appropriate mouse support is enabled.
+ NET Appropriate network support is enabled.
+ NFS Appropriate NFS support is enabled.
+ PARIDE The ParIDE subsystem is enabled.
+ PCI PCI bus support is enabled.
+ PCMCIA The PCMCIA subsystem is enabled.
+ PNP Plug & Play support is enabled.
+ PPT Parallel port support is enabled.
+ PS2 Appropriate PS/2 support is enabled.
+ RAM RAM disk support is enabled.
+ SCSI Appropriate SCSI support is enabled.
+ SERIAL Serial support is enabled.
+ SMP The kernel is an SMP kernel.
+ SOUND Appropriate sound system support is enabled.
+ VGA The VGA console has been enabled.
+ VT Virtual terminal support is enabled.
+ XT IBM PC/XT MFM hard disk support is enabled.
In addition, the following text indicates that the option:
- BUGS= Relates to possible processor bugs on the said processor.
- KNL Is a kernel start-up parameter.
+ BUGS= Relates to possible processor bugs on the said processor.
+ KNL Is a kernel start-up parameter.
Note that ALL kernel parameters listed below are CASE SENSITIVE, and that
a trailing = on the name of any parameter states that that parameter will
@@ -52,353 +52,353 @@
it will appear as a kernel argument readable via /proc/cmdline by programs
running once the system is up.
- 53c7xx= [HW,SCSI] Amiga SCSI controllers
+ 53c7xx= [HW,SCSI] Amiga SCSI controllers.
- adb_buttons= [HW,MOUSE]
+ adb_buttons= [HW,MOUSE]
- advansys= [HW,SCSI]
+ advansys= [HW,SCSI]
- aha152x= [HW,SCSI]
+ aha152x= [HW,SCSI]
- aha1542= [HW,SCSI]
+ aha1542= [HW,SCSI]
- aic7xxx= [HW,SCSI]
+ aic7xxx= [HW,SCSI]
- AM53C974= [HW,SCSI]
+ AM53C974= [HW,SCSI]
- apm= [APM] Advanced Power Management.
+ apm= [APM] Advanced Power Management.
- arcrimi= [HW,NET]
+ arcrimi= [HW,NET]
- ataflop= [HW, M68k]
+ ataflop= [HW, M68k]
- atamouse= [HW,MOUSE] Atari Mouse.
+ atamouse= [HW,MOUSE] Atari Mouse.
- atascsi= [HW,SCSI] Atari SCSI.
+ atascsi= [HW,SCSI] Atari SCSI.
- aztcd= [HW,CD] Aztec CD driver.
+ aztcd= [HW,CD] Aztec CD driver.
- baycom_par= [HW,AX25] BayCom Parallel Port AX.25 Modem.
+ baycom_par= [HW,AX25] BayCom Parallel Port AX.25 Modem.
- baycom_ser_fdx= [HW,AX25] BayCom Serial Port AX.25 Modem in Full
+ baycom_ser_fdx= [HW,AX25] BayCom Serial Port AX.25 Modem in Full
Duplex Mode.
- baycom_ser_hdx= [HW,AX25] BayCom Serial Port AX.25 Modem in Half
+ baycom_ser_hdx= [HW,AX25] BayCom Serial Port AX.25 Modem in Half
Duplex Mode.
- bmouse= [HW,MOUSE,PS2] Bus mouse.
+ bmouse= [HW,MOUSE,PS2] Bus mouse.
- BusLogic= [HW,SCSI]
+ BusLogic= [HW,SCSI]
- cdu31a= [HW,CD]
+ cdu31a= [HW,CD]
- cm206= [HW,CD]
+ cm206= [HW,CD]
- com20020= [HW,NET]
+ com20020= [HW,NET]
- com90io= [HW,NET]
+ com90io= [HW,NET]
- com90xx= [HW,NET]
+ com90xx= [HW,NET]
- console= [KNL] output console + comm spec (speed, control, parity)
+ console= [KNL] output console + comm spec (speed, control,
+ parity).
- cyclades= [HW,SERIAL] Cyclades multi-serial port adapter.
+ cyclades= [HW,SERIAL] Cyclades multi-serial port adapter.
- debug [KNL] Enable kernel debugging (events log level).
+ debug [KNL] Enable kernel debugging (events log level).
- decnet= [HW,NET]
+ decnet= [HW,NET]
- digi= [HW,SERIAL] io parameters + enable/disable command
+ digi= [HW,SERIAL] io parameters + enable/disable command.
- digiepca= [HW,SERIAL]
+ digiepca= [HW,SERIAL]
- dmascc= [HW,AX25,SERIAL] AX.25 Z80SCC driver with DMA
+ dmascc= [HW,AX25,SERIAL] AX.25 Z80SCC driver with DMA
support available.
- dmasound= [HW,SOUND] (sound subsystem buffers)
+ dmasound= [HW,SOUND] (sound subsystem buffers).
- dtc3181e= [HW,SCSI]
+ dtc3181e= [HW,SCSI]
- eata= [HW,SCSI]
+ eata= [HW,SCSI]
- eda= [HW,PS2]
+ eda= [HW,PS2]
- edb= [HW,PS2]
+ edb= [HW,PS2]
- ether= [HW,NET] Ethernet cards parameters (iomem,irq,dev_name).
+ ether= [HW,NET] Ethernet cards parameters (iomem, irq,
+ dev_name).
- fd_mcs= [HW,SCSI]
+ fd_mcs= [HW,SCSI]
- fdomain= [HW,SCSI]
+ fdomain= [HW,SCSI]
- floppy= [HW]
+ floppy= [HW]
- ftape= [HW] Floppy Tape subsystem debugging options.
+ ftape= [HW] Floppy Tape subsystem debugging options.
- gdth= [HW,SCSI]
+ gdth= [HW,SCSI]
- gscd= [HW,CD]
+ gscd= [HW,CD]
- gvp11= [HW,SCSI]
+ gvp11= [HW,SCSI]
- hd= [EIDE] (E)IDE hard drive subsystem
- geometry (Cyl/heads/sectors) or tune parameters.
+ hd= [EIDE] (E)IDE hard drive subsystem geometry
+ (Cyl/heads/sectors) or tune parameters.
- hfmodem= [HW,AX25]
+ hfmodem= [HW,AX25]
- HiSax= [HW,ISDN]
+ HiSax= [HW,ISDN]
- hisax= [HW,ISDN]
+ hisax= [HW,ISDN]
- in2000= [HW,SCSI]
+ in2000= [HW,SCSI]
- init= [KNL]
+ init= [KNL]
+ ibmmcascsi= [HW,MCA,SCSI] IBM MicroChannel SCSI adapter.
-
- ibmmcascsi= [HW,MCA,SCSI] IBM MicroChannel SCSI adapter.
-
- icn= [HW,ISDN]
+ icn= [HW,ISDN]
ide?= [HW] (E)IDE subsystem : config (iomem/irq), tuning or
- debugging (serialize,reset,no{dma,tune,probe}) or
- chipset specific parameters
+ debugging (serialize,reset,no{dma,tune,probe}) or
+ chipset specific parameters.
- idebus= [HW] (E)IDE subsystem : VLB/PCI bus speed
-
- in2000= [HW,SCSI]
+ idebus= [HW] (E)IDE subsystem : VLB/PCI bus speed.
- init= [KNL] default init level
+ in2000= [HW,SCSI]
- initrd= [KNL] initial ramdisk path
+ init= [KNL] Default init level.
- ip= [PNP]
+ ip= [PNP]
- isp16= [HW,CD]
+ isp16= [HW,CD]
- js_14= [HW,JOY]
+ js_14= [HW,JOY]
- js_am= [HW,JOY]
+ js_am= [HW,JOY]
- js_an= [HW,JOY]
+ js_an= [HW,JOY]
- js_as= [HW.JOY]
+ js_as= [HW.JOY]
- js_console= [HW,JOY]
+ js_console= [HW,JOY]
- js_console2= [HW,JOY]
+ js_console2= [HW,JOY]
- js_console3= [HW,JOY]
+ js_console3= [HW,JOY]
- js_db9= [HW,JOY]
+ js_db9= [HW,JOY]
- js_db9_2= [HW,JOY]
+ js_db9_2= [HW,JOY]
- js_db9_3= [HW,JOY]
+ js_db9_3= [HW,JOY]
- js_tg= [HW,JOY]
+ js_tg= [HW,JOY]
- js_tg_2= [HW,JOY]
+ js_tg_2= [HW,JOY]
- js_tg_3= [HW,JOY]
+ js_tg_3= [HW,JOY]
- kbd-reset [VT]
+ kbd-reset [VT]
- load_ramdisk= [RAM] initrd loading boolean
+ load_ramdisk= [RAM] List of ramdisks to load from floppy.
- lp=0 [LP] Specify parallel ports to use, e.g,
-or lp=port[,port...] lp=none,parport0 (lp0 not configured, lp1 uses
-or lp=reset first parallel port). 'lp=0' disables the printer
-or lp=auto driver. 'lp=reset' (which can be specified in
- addition to the ports) causes attached
- printers to be reset. Using
- lp=port1,port2,... specifies the parallel
- ports to associate lp devices with, starting
- with lp0. A port specification may be 'none'
- to skip that lp device, or a parport name such
- as 'parport0'. Specifying 'lp=auto' instead
- of a port specification list means that device
- IDs from each port should be examined, to see
- if an IEEE 1284-compliant printer is attached;
- if so, the driver will manage that printer.
+ lp=0 [LP] Specify parallel ports to use, e.g,
+ lp=port[,port...] lp=none,parport0 (lp0 not configured, lp1 uses
+ lp=reset first parallel port). 'lp=0' disables the
+ lp=auto printer driver. 'lp=reset' (which can be
+ specified in addition to the ports) causes
+ attached printers to be reset. Using
+ lp=port1,port2,... specifies the parallel ports
+ to associate lp devices with, starting with
+ lp0. A port specification may be 'none' to skip
+ that lp device, or a parport name such as
+ 'parport0'. Specifying 'lp=auto' instead of a
+ port specification list means that device IDs
+ from each port should be examined, to see if
+ an IEEE 1284-compliant printer is attached; if
+ so, the driver will manage that printer.
- ltpc= [HW]
+ ltpc= [HW]
- mac5380= [HW,SCSI]
+ mac5380= [HW,SCSI]
- max_loop=[0-255] [LOOP] States the maximum number of loopback devices
- that can be mounted.
+ max_loop=[0-255] [LOOP] Set the maximum number of loopback devices
+ that can be mounted.
- maxcpus= [SMP] States the maximum number of processors that
+ maxcpus= [SMP] States the maximum number of processors that
an SMP kernel should make use of.
- max_scsi_luns= [SCSI]
+ max_scsi_luns= [SCSI]
- mca-pentium [BUGS=ix86]
+ mca-pentium [BUGS=ix86]
- mcd= [HW,CD]
+ mcd= [HW,CD]
- mcdx= [HW,CD]
+ mcdx= [HW,CD]
- md= [HW] RAID subsystems devices and level
+ md= [HW] RAID subsystems devices and level.
- mdacon= [MDA]
+ mdacon= [MDA]
- mem= [KNL] force use XX Mb of memory when the kernel is not able
- to see the whole system memory or for test
+ mem= [KNL] force use XX Mb of memory when the kernel is not
+ able to see the whole system memory or for test.
- msmouse= [HW,MOUSE] Microsoft Mouse.
+ msmouse= [HW,MOUSE] Microsoft Mouse.
- ncr5380= [HW,SCSI]
+ ncr5380= [HW,SCSI]
- ncr53c400= [HW,SCSI]
+ ncr53c400= [HW,SCSI]
- ncr53c400a= [HW,SCSI]
+ ncr53c400a= [HW,SCSI]
- ncr53c406a= [HW,SCSI]
+ ncr53c406a= [HW,SCSI]
- ncr53c8xx= [HW,SCSI]
+ ncr53c8xx= [HW,SCSI]
- nfsaddrs= [NFS]
+ nfsaddrs= [NFS]
- nfsroot= [NFS] nfs root filesystem for disk-less boxes
+ nfsroot= [NFS] nfs root filesystem for disk-less boxes.
- nmi_watchdog= [KNL, BUGS=ix86] debugging features for SMP kernels
+ nmi_watchdog= [KNL, BUGS=ix86] debugging features for SMP kernels.
- no387 [BUGS=ix86] Tells the kernel to use the 387 maths
+ no387 [BUGS=ix86] Tells the kernel to use the 387 maths
emulation library even if a 387 maths coprocessor
is present.
- noapic [SMP,APIC] Tells the kernel not to make use of any
+ noapic [SMP,APIC] Tells the kernel not to make use of any
APIC that may be present on the system.
- noasync [HW, M68K] Disables async and sync negotiation for all devices.
+ noasync [HW, M68K] Disables async and sync negotiation for
+ all devices.
- nodisconnect [HW,SCSI, M68K] Disables SCSI disconnects.
+ nodisconnect [HW,SCSI, M68K] Disables SCSI disconnects.
- no-halt [BUGS=ix86]
+ no-halt [BUGS=ix86]
- noinitrd [RAM] Tells the kernel not to load any configured
- initial ramdisc.
+ noinitrd [RAM] Tells the kernel not to load any configured
+ initial RAM disk.
- no-scroll [VGA]
+ no-scroll [VGA]
- nosmp [SMP] Tells an SMP kernel to act as a UP kernel.
+ nosmp [SMP] Tells an SMP kernel to act as a UP kernel.
- nosync [HW, M68K] Disables sync negotiation for all devices.
+ nosync [HW, M68K] Disables sync negotiation for all devices.
- optcd= [HW,CD]
+ optcd= [HW,CD]
- panic= [KNL] kernel behaviour on panic
+ panic= [KNL] kernel behaviour on panic.
- parport=0 [HW,PPT] Specify parallel ports. 0
-or parport=auto disables. Use 'auto' to force the driver
-or parport=0xBBB[,IRQ[,DMA]] to use any IRQ/DMA settings detected
- (the default is to ignore detected
- IRQ/DMA settings because of possible
- conflicts). You can specify the base
- address, IRQ, and DMA settings; IRQ
- and DMA should be numbers, or 'auto'
- (for using detected settings on that
- particular port), or 'nofifo' (to
- avoid using a FIFO even if it is
- detected). Parallel ports are
- assigned in the order they are
- specified on the command line,
- starting with parport0.
+ parport=0 [HW,PPT] Specify parallel ports. 0 disables.
+ parport=auto Use 'auto' to force the driver to use
+ parport=0xBBB[,IRQ[,DMA]] any IRQ/DMA settings detected (the
+ default is to ignore detected IRQ/DMA
+ settings because of possible
+ conflicts). You can specify the base
+ address, IRQ, and DMA settings; IRQ and
+ DMA should be numbers, or 'auto' (for
+ using detected settings on that
+ particular port), or 'nofifo' (to avoid
+ using a FIFO even if it is detected).
+ Parallel ports are assigned in the
+ order they are specified on the command
+ line, starting with parport0.
- pas16= [HW,SCSI]
+ pas16= [HW,SCSI]
- pcbit= [HW,ISDN]
+ pcbit= [HW,ISDN]
- pcd. [PARIDE]
+ pcd. [PARIDE]
- pci= [PCI]
+ pci= [PCI]
- pd. [PARIDE]
+ pd. [PARIDE]
- pf. [PARIDE]
+ pf. [PARIDE]
- pg. [PARIDE]
+ pg. [PARIDE]
- pirq= [SMP,APIC] mp-table
+ pirq= [SMP,APIC] mp-table.
- plip= [PPT,NET] Parallel port network link.
+ plip= [PPT,NET] Parallel port network link.
- profile= [KNL] enable kernel profiling via /proc/profile (param:log level)
+ profile= [KNL] enable kernel profiling via /proc/profile
+ (param:log level).
- prompt_ramdisk= [RAM] Whether to prompt for ramdisk before loading
- its contents into memory.
+ prompt_ramdisk= [RAM] List of RAM disks to prompt for floppy disk
+ before loading.
- pt. [PARIDE]
+ pt. [PARIDE]
- ramdisk= [RAM]
+ ramdisk= [RAM] Sizes of RAM disks in kilobytes [deprecated].
- ramdisk_size= [RAM]
+ ramdisk_size= [RAM] New name for the ramdisk parameter.
- ramdisk_start= [RAM]
+ ramdisk_start= [RAM] Starting block of RAM disk image (so you can
+ place it after the kernel image on a boot floppy).
- reboot= [BUGS=ix86]
+ reboot= [BUGS=ix86]
- reserve= [KNL,BUGS] force the kernel to ignore some iomem area
+ reserve= [KNL,BUGS] force the kernel to ignore some iomem area.
- riscom8= [HW,SERIAL]
+ riscom8= [HW,SERIAL]
- ro [KNL] Mount root device read-only on boot.
+ ro [KNL] Mount root device read-only on boot.
- root= [KNL] root filesystem
+ root= [KNL] root filesystem.
- rw [KNL] Mount root device read-write on boot.
+ rw [KNL] Mount root device read-write on boot.
- S [KNL] run init in single mode
+ S [KNL] run init in single mode.
- sbpcd= [HW,CD] Soundblaster CD adapter.
+ sbpcd= [HW,CD] Soundblaster CD adapter.
- scsi_logging= [SCSI]
+ scsi_logging= [SCSI]
- sjcd= [HW,CD]
+ sjcd= [HW,CD]
- sonycd535= [HW,CD]
+ sonycd535= [HW,CD]
- sound= [SOUND]
+ sound= [SOUND]
- soundmodem= [HW,AX25,SOUND] Sound cards used as AX.25 modems.
+ soundmodem= [HW,AX25,SOUND] Use sound card as packet radio modem.
- specialix= [HW,SERIAL] Specialix multi-serial port adapter.
+ specialix= [HW,SERIAL] Specialix multi-serial port adapter.
- st= [HW] SCSI tape parameters (buffers, ..)
+ st= [HW] SCSI tape parameters (buffers, etc.).
- st0x= [HW,SCSI]
+ st0x= [HW,SCSI]
- stram_swap= [HW]
+ stram_swap= [HW]
- switches= [HW, M68K]
+ switches= [HW, M68K]
- sym53c416= [HW,SCSI]
+ sym53c416= [HW,SCSI]
- sym53c8xx= [HW,SCSI]
+ sym53c8xx= [HW,SCSI]
- t128= [HW,SCSI]
+ t128= [HW,SCSI]
- tmc8xx= [HW,SCSI]
+ tmc8xx= [HW,SCSI]
- tmscsim= [HW,SCSI]
+ tmscsim= [HW,SCSI]
- tp720= [HW,PS2]
+ tp720= [HW,PS2]
- u14-34f= [HW,SCSI]
+ u14-34f= [HW,SCSI]
- video= [FB] frame buffer configuration
+ video= [FB] frame buffer configuration.
- vga= [KNL] on ix386, enable to choose a peculiar video mode
- vga=ask
+ vga= [KNL] on ix386, enable to choose a peculiar video mode
+ (use vga=ask for menu).
- wd33c93= [HW,SCSI]
+ wd33c93= [HW,SCSI]
- wd7000= [HW,SCSI]
+ wd7000= [HW,SCSI]
- wdt= [HW]
+ wdt= [HW]
- xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks
+ xd= [HW,XT] Original XT pre-IDE (RLL encoded) disks.
- xd_geo= [HW,XT]
+ xd_geo= [HW,XT]
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