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# 7.8 Live 模式修复 GRUB 引导
格进入Live模式后打开终端或者安装盘进入安装界面时Ctrl+Alt+F2进入tty2先执行“lsblk -f”找到系统安装分区sdaX按顺序执行
`mount /dev/sdaX /mnt`
`mount /dev/sdaY /mnt/boot/efi`
`mount --bind /dev /mnt/dev`
`mount --bind /proc /mnt/proc`
`mount --bind /sys /mnt/sys`
`chroot /mnt`
`grub-install /dev/sda`
`update-grub`
`exit`
sdaY为efi分区MBR磁盘可忽略此步骤。重要不同硬盘请酌情替换sda及X/Y。
注意UEFI启动方式由于存在EFI分区可以直接执行`grub-install`