Ubuntu 16.04 - grub & busybox restoration

commands.md

Grub

Conversion qwerty azerty

(	9
)	0
---	---
/	!
---	---
,	;
---	---
m	,
---	---

prompt grub

root (hd0,[TAB]
      Possible partitions are:
        Partition num: 0,  Filesystem type is fat, partition type 0xb
        ...
        Partition num: 6,  Filesystem type is ext4fs, partition type 0x83
        ...
# /dev/sda6 will probably be the / partition (first ext4fs)

Boot sur l'avant dernier noyau

set root=(hd0,1)
linux /vmlinuz.old root=/dev/sda6
initrd /initrd.img.old
boot

Boot sur le dernier noyau

set root=(hd0,1)
linux /vmlinuz root=/dev/sda6
initrd /initrd.img
boot

prompt busy-box

blkid
mkdir /mnt
mount /dev/sda6 /mnt
mount --bind /sys /mnt/sys
mount --bind /dev /mnt/dev
mount --bind /proc /mnt/proc
chroot /mnt
update-grub
grub-install /dev/sda

exit
reboot