Kernel parameters (简体中文)

From ArchWiki
Revision as of 08:49, 28 November 2012 by Jobinson99 (Talk | contribs) (创建页面)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search


一共有三种办法,可以给内核传递参数,用于控制其行为方式:

  1. 在编译内核时(这个最根本,会决定后面两种方法)
  2. 内核启动时(通常是在一个启动管理器里设置).
  3. 在运行时 (通过修改在 /proc/sys中的文件).

本页面主要是讲第二种方法。

配置

内核参数可以在启动时临时修改,也可以永久性写到启动管理器的配置文件中,永远起作用。

下面示例:把参数quietsplash 加到启动管理器 Syslinux, GRUB, GRUB LegacyLILO中.

Syslinux

> .linux ../vmlinuz-linux root=/dev/sda3 ro initrd=../initramfs-linux.img quiet splash
Press Template:Keypress to boot with these parameters.
  • To make the change persistent after reboot, edit /boot/syslinux/syslinux.cfg and add them to the APPEND line:
APPEND root=/dev/sda3 ro quiet splash

更多详情请见Syslinux

GRUB

linux   /boot/vmlinuz-linux root=UUID=978e3e81-8048-4ae1-8a06-aa727458e8ff ro  quiet splash
Press Template:Keypress to boot with these parameters.
  • To make the change persistent after reboot, while you could manually edit /boot/grub/grub.cfg with the exact line from above, for beginners it's recommended to:
Edit /etc/default/grub and append your kernel options to the GRUB_CMDLINE_LINUX_DEFAULT line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
And then automatically re-generate the grub.cfg file with:
# grub-mkconfig -o /boot/grub/grub.cfg

For more information on configuring GRUB, see the GRUB article.

GRUB Legacy

kernel /boot/vmlinuz-linux root=/dev/sda3 ro quiet splash
Press Template:Keypress to boot with these parameters.
  • To make the change persistent after reboot, edit /boot/grub/menu.lst and add them to the kernel line, exactly like above.

For more information on configuring GRUB Legacy, see the GRUB Legacy article.

LILO

  • Add them to /etc/lilo.conf:
image=/boot/vmlinuz-linux
        ...
        quiet splash

For more information on configuring LILO, see the LILO article.

常见参数列表

Tango-view-fullscreen.pngThis article or section needs expansion.Tango-view-fullscreen.png

Reason: The list needs more parameters. (Discuss in Talk:Kernel parameters (简体中文)#)
Note: Not all of the listed options are always available. Most are associated with subsystems and work only if the kernel is configured with those subsystems built in. They also depend on the presence of the hardware they are associated with.
SysVinit systemd Description
3 systemd.unit=multi-user Boot to a specified runlevel (3, in this case). Works with 1-6.
1 systemd.unit=rescue Boot to Single-user mode (root).
nomodeset nomodeset Disable Kernel Mode Setting.
loglevel=3 loglevel=3 Removes "misaligned reg" and "unknown connector type" messages during boot with the Nouveau driver. See this topic.
-- init=/usr/lib/systemd/systemd Boot using systemd instead of SysVinit.

All of these parameters are case-sensitive.

For a complete list of all known options, please see the kernel documentation.

更多信息