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2<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> 2<!DOCTYPE sections SYSTEM "/dtd/book.dtd">
3 3
4<!-- The content of this document is licensed under the CC-BY-SA license --> 4<!-- The content of this document is licensed under the CC-BY-SA license -->
5<!-- See http://creativecommons.org/licenses/by-sa/2.5 --> 5<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
6 6
7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-medium.xml,v 1.11 2008/04/01 17:21:03 neysx Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-x86+amd64-medium.xml,v 1.12 2008/04/02 16:43:02 neysx Exp $ -->
8 8
9<sections> 9<sections>
10 10
11<abstract> 11<abstract>
12You can install Gentoo in many ways. This chapter explains how to install 12You can install Gentoo in many ways. This chapter explains how to install
384 <ti>memtest86</ti> 384 <ti>memtest86</ti>
385 <ti>Test your local RAM for errors</ti> 385 <ti>Test your local RAM for errors</ti>
386</tr> 386</tr>
387</table> 387</table>
388 388
389</body>
390<body>
391
392<p> 389<p>
393You can also provide kernel options. They represent optional settings you can 390You can also provide kernel options. They represent optional settings you can
394(de)activate at will. The following options are available when you press F2 at 391(de)activate at will. The following options are available when you press F2 at
395the bootscreen. 392the bootscreen.
396</p> 393</p>
397 394
398<p> 395</body>
399<brite>Hardware options:</brite>
400</p>
401 396
402<dl> 397<body>
403<dt>acpi=on</dt> 398 <include href="hb-install-kernelparams.xml"/>
404<dd> 399</body>
405 This loads support for ACPI and also causes the acpid daemon to be started by
406 the CD on boot. This is only needed if your system requires ACPI to function
407 properly. This is not required for Hyperthreading support.
408</dd>
409<dt>acpi=off</dt>
410<dd>
411 Completely disables ACPI. This is useful on some older systems and is also a
412 requirement for using APM. This will disable any Hyperthreading support of
413 your processor.
414</dd>
415<dt>console=X</dt>
416<dd>
417 This sets up serial console access for the CD. The first option is the
418 device, usually ttyS0 on x86, followed by any connection options, which are
419 comma separated. The default options are 9600,8,n,1.
420</dd>
421<dt>dmraid=X</dt>
422<dd>
423 This allows for passing options to the device-mapper RAID subsystem. Options
424 should be encapsulated in quotes.
425</dd>
426<dt>doapm</dt>
427<dd>
428 This loads APM driver support. This requires you to also use acpi=off.
429</dd>
430<dt>dopcmcia</dt>
431<dd>
432 This loads support for PCMCIA and Cardbus hardware and also causes the pcmcia
433 cardmgr to be started by the CD on boot. This is only required when booting
434 from PCMCIA/Cardbus devices.
435</dd>
436<dt>doscsi</dt>
437<dd>
438 This loads support for most SCSI controllers. This is also a requirement for
439 booting most USB devices, as they use the SCSI subsystem of the kernel.
440</dd>
441<dt>hda=stroke</dt>
442<dd>
443 This allows you to partition the whole hard disk even when your BIOS is unable
444 to handle large disks. This option is only used on machines with an older BIOS.
445 Replace hda with the device that is requiring this option.
446</dd>
447<dt>ide=nodma</dt>
448<dd>
449 This forces the disabling of DMA in the kernel and is required by some IDE
450 chipsets and also by some CDROM drives. If your system is having trouble
451 reading from your IDE CDROM, try this option. This also disables the default
452 hdparm settings from being executed.
453</dd>
454<dt>noapic</dt>
455<dd>
456 This disables the Advanced Programmable Interrupt Controller that is present
457 on newer motherboards. It has been known to cause some problems on older
458 hardware.
459</dd>
460<dt>nodetect</dt>
461<dd>
462 This disables all of the autodetection done by the CD, including device
463 autodetection and DHCP probing. This is useful for doing debugging of a
464 failing CD or driver.
465</dd>
466<dt>nodhcp</dt>
467<dd>
468 This disables DHCP probing on detected network cards. This is useful on
469 networks with only static addresses.
470</dd>
471<dt>nodmraid</dt>
472<dd>
473 Disables support for device-mapper RAID, such as that used for on-board
474 IDE/SATA RAID controllers.
475</dd>
476<dt>nofirewire</dt>
477<dd>
478 This disables the loading of Firewire modules. This should only be necessary
479 if your Firewire hardware is causing a problem with booting the CD.
480</dd>
481<dt>nogpm</dt>
482<dd>
483 This diables gpm console mouse support.
484</dd>
485<dt>nohotplug</dt>
486<dd>
487 This disables the loading of the hotplug and coldplug init scripts at boot.
488 This is useful for doing debugging of a failing CD or driver.
489</dd>
490<dt>nokeymap</dt>
491<dd>
492 This disables the keymap selection used to select non-US keyboard layouts.
493</dd>
494<dt>nolapic</dt>
495<dd>
496 This disables the local APIC on Uniprocessor kernels.
497</dd>
498<dt>nosata</dt>
499<dd>
500 This disables the loading of Serial ATA modules. This is used if your system
501 is having problems with the SATA subsystem.
502</dd>
503<dt>nosmp</dt>
504<dd>
505 This disables SMP, or Symmetric Multiprocessing, on SMP-enabled kernels. This
506 is useful for debugging SMP-related issues with certain drivers and
507 motherboards.
508</dd>
509<dt>nosound</dt>
510<dd>
511 This disables sound support and volume setting. This is useful for systems
512 where sound support causes problems.
513</dd>
514<dt>nousb</dt>
515<dd>
516 This disables the autoloading of USB modules. This is useful for debugging
517 USB issues.
518</dd>
519<dt>slowusb</dt>
520<dd>
521 This adds some extra pauses into the boot process for slow USB CDROMs, like
522 in the IBM BladeCenter.
523</dd>
524</dl>
525 400
526<p> 401<body>
527<brite>Volume/Device Management:</brite>
528</p>
529
530<dl>
531<dt>doevms</dt>
532<dd>
533 This enables support for IBM's pluggable EVMS, or Enterprise Volume
534 Management System. This is not safe to use with lvm.
535</dd>
536<dt>dolvm</dt>
537<dd>
538 This enables support for Linux's Logical Volume Management. This is not safe
539 to use with evms.
540</dd>
541</dl>
542
543<p>
544<brite>Other options:</brite>
545</p>
546
547<dl>
548<dt>debug</dt>
549<dd>
550 Enables debugging code. This might get messy, as it displays a lot of data to
551 the screen.
552</dd>
553<dt>docache</dt>
554<dd>
555 This caches the entire runtime portion of the CD into RAM, which allows you
556 to umount /mnt/cdrom and mount another CDROM. This option requires that you
557 have
558 at least twice as much available RAM as the size of the CD.
559</dd>
560<dt>doload=X</dt>
561<dd>
562 This causes the initial ramdisk to load any module listed, as well as
563 dependencies. Replace X with the module name.
564<br/>
565 Multiple modules can be specified by a comma-separated list.
566</dd>
567<dt>dosshd</dt>
568<dd>
569 Starts sshd on boot, which is useful for unattended installs.
570</dd>
571<dt>passwd=foo</dt>
572<dd>
573 Sets whatever follows the equals as the root password, which is required for
574 dosshd since we scramble the root password.
575</dd>
576<dt>noload=X</dt>
577<dd>
578 This causes the initial ramdisk to skip the loading of a specific module that
579 may be causing a problem. Syntax matches that of doload.
580</dd>
581<dt>nonfs</dt>
582<dd>
583 Disables the starting of portmap/nfsmount on boot.
584</dd>
585<dt>nox</dt>
586<dd>
587 This causes an X-enabled LiveCD to not automatically start X, but rather, to
588 drop to the command line instead.
589</dd>
590<dt>scandelay</dt>
591<dd>
592 This causes the CD to pause for 10 seconds during certain portions the boot
593 process to allow for devices that are slow to initialize to be ready for use.
594</dd>
595<dt>scandelay=X</dt>
596<dd>
597 This allows you to specify a given delay, in seconds, to be added to certain
598 portions of the boot process to allow for devices that are slow to initialize
599 to be ready for use. Replace X with the number of seconds to pause.
600</dd>
601</dl>
602 402
603<note> 403<note>
604The CD will check for "no*" options before "do*" options, so that you can 404The CD will check for "no*" options before "do*" options, so that you can
605override any option in the exact order you specify. 405override any option in the exact order you specify.
606</note> 406</note>

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