在CentOS7 RHEL 7 设置GRUB2菜单的超时时间

在CentOS7 RHEL 7 设置GRUB2菜单的超时时间

Update GRUB2 menu timeout on RHEL 7 Linux

系统启动期间GRUB2超时菜单选项的默认设置为5秒。 打开/etc/default/grub grub默认配置文件。

The default settings for the GRUB2 timeout menu selection during the system boot is 5 seconds. To change this value open /etc/default/grub grub default config file. The content of the file looks similar the the one shown below:

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel/root crashkernel=auto

rd.lvm.lv=rhel/swap vconsole.font=latarcyrheb-sun16 vconsole.keymap=us rhgb quiet"

GRUB_DISABLE_RECOVERY="true"