- Find partition contain boot
grub> ls
(hd0) (hd0,gpt7) (hd0,gpt6) (hd0,gpt5) (hd0,gpt4) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1)Assume partition (hd0,gpt1) contain boot info
- Set root envirionment
grub> set root=(hd0,gpt1)- Set kernel version
grub> linux /boot/vmlinux-<specific-version> root=/dev/sda1- Init
grub> initrd /boot/initrd.img-<specific-version>- Reboot PC
grub> boot