• boot da live
• mount del fs su /mnt
• bind mount di /proc /sys e /dev

mount -o bind /proc /mnt/proc
mount -o bind /sys /mnt/sys
mount -o bind /dev /mnt/dev
mount -o bind /dev/pts /mnt/dev/pts

• eventualmente sistemare /mnt/resolv.conf se serve il DNS
• eseguire chroot /mnt