Linux command
grub 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Enter GRUB shell
sudo grub
Install GRUB to disk
sudo grub-install /dev/sda
Update GRUB configuration
sudo update-grub
Generate config file
sudo grub-mkconfig -o /boot/grub/grub.cfg
Check GRUB version
grub-install --version
说明
GRUB (GRand Unified Bootloader) is the standard bootloader for Linux systems. It loads the kernel and initrd, presenting a boot menu for system selection. GRUB 2 supports multiple filesystems, LVM, RAID, and encrypted partitions. It provides rescue mode for system recovery and scripting for advanced configurations.
参数
- --root-directory _DIR_
- Install to alternate root.
- --boot-directory _DIR_
- Boot directory location.
- --target _TARGET_
- Target platform.
- --recheck
- Probe devices again.
- --removable
- Install for removable media.
- --help
- Display help information.
FAQ
What is the grub command used for?
GRUB (GRand Unified Bootloader) is the standard bootloader for Linux systems. It loads the kernel and initrd, presenting a boot menu for system selection. GRUB 2 supports multiple filesystems, LVM, RAID, and encrypted partitions. It provides rescue mode for system recovery and scripting for advanced configurations.
How do I run a basic grub example?
Run `sudo grub` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does --root-directory _DIR_ do in grub?
Install to alternate root.