# ssh://git.mdcc.cx/git/ad1810-doc.git debian/grub.txt

             how to restore a borken grub2
                         by
                Joost van Baal-Ilić
                   february 2014

How to escape from the grub 2 rescue shell, on Debian (or Ubuntu) systems.

grub rescue> ls
grub rescue> ls (hd0,msdos1)/boot
grub rescue> set prefix=(hd0,msdos1)/boot/grub
grub rescue> insmod normal
grub rescue> insmod help
grub rescue> help
grub rescue> insmod linux
grub rescue> linux (hd0,msdos1)/vmlinuz root=/dev/sda1
grub rescue> initrd (hd0,msdos1)/initrd.img
grub rescue> boot

# grub-install /dev/sda
# update-grub

met dank aan Renier



Update may 2015:

In case you use gpt, you might have to run:

grub rescue> set prefix=(hd0,gpt1)/efi/grub
grub rescue> ls (raid1-root)/boot/grub