> sudo -i
# fdisk -l (pilih partisi linux)
# mount -t ext4 /dev/sda? /mnt/ (? diganti dengan partisi linux)
# mount -t proc proc /mnt/proc
# mount -t sysfs sys /mnt/sys
# mount -o bind /dev/ /mnt/dev
# chroot /mnt/ /bin/bash
# grub-install /dev/sda
# update-grub
