參考連結
https://www.linux.com/learn/how-rescue-non-booting-grub-2-linux
grub rescue> ls
(Hd0) (hd0,msdos4)
grub rescue> set prefix=(hd0,msdos4)/boot/grub
grub rescue> set root=(hd0,msdos4)
grub rescue> insmod normal
grub rescue> normal
========================
grub rescue> insmod linux
grub rescue> linux /boot/vmlinuz-3.13.0-29-generic root=/dev/sda1
grub rescue> initrd /boot/initrd.img-3.13.0-29-generic
grub rescue> boot
