gero

lubuntu@lubuntu:~$ sudo mount /dev/sda2 /mnt
lubuntu@lubuntu:~$ sudo mount --bind /dev /mnt/dev
lubuntu@lubuntu:~$ sudo mount --bind /proc /mnt/proc
lubuntu@lubuntu:~$ sudo mount --bind /sys /mnt/sys
lubuntu@lubuntu:~$ sudo chroot /mnt
root@lubuntu:/# grub-install --target=i386-pc --recheck /dev/sda
Installing for i386-pc platform.
Installation finished. No error reported.
root@lubuntu:/# update-grub
Generating grub configuration file ...
Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Found linux image: /boot/vmlinuz-4.4.0-24-generic
Found initrd image: /boot/initrd.img-4.4.0-24-generic
Found linux image: /boot/vmlinuz-4.4.0-21-generic
Found initrd image: /boot/initrd.img-4.4.0-21-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done
root@lubuntu:/#