Símbolo GRUB não encontrado grub divmod64 full

Грузимся в resgate

mount /dev/md2 /mnt
mount /dev/md1 /mnt/boot
mount --bind /dev /mnt/dev
mount --bind /proc /mnt/proc
mount --bind /sys /mnt/sys
chroot /mnt
grub-mkconfig -o /boot/grub/grub.cfg
grub-install /dev/sda
update-grub

Перегружаемся

reboot