自定义 Linux 启动

文档时效性说明

本文为早期笔记，可能存在版本过时、命令失效、链接失效、最佳实践变化等问题。请以官方最新文档为准。

原英文标题：Customizing Linux Boot

To show kernel messages:

GRUB_CMDLINE_LINUX_DEFAULT="splash"

To enable hibernate:

GRUB_CMDLINE_LINUX="resume=UUID=3b745370-dce7-483a-abd4-27439f9cdea4"

disk UUID can be shown by blkid command.

generate grub.cfg :

sudo grub-mkconfig -o /boot/grub/grub.cfg

and then edit /etc/mkinitcpio.conf, find the line that looks like this: 

HOOKS="base udev autodetect modconf block filesystems keyboard fsck"

It is located in the section named HOOKS. After udev insert hook resume (Like this: ..base udev resume..)

HOOKS="base udev resume autodetect modconf block filesystems keyboard fsck"

Save the file. run

mkinitcpio -p linux

to generate initramfs.

To boot into runlevel 3:

sudo systemctl set-default multi-user.target

To get current default runlevel:

sudo systemctl get-default