linux gandu

sudo mkdir -p /mnt/dev /mnt/proc /mnt/sys /mnt/run /mnt/dev/pts
for i in /dev/pts /proc /sys /run; do sudo mount -B $i /mnt$i; done
sudo mount -B /dev /mnt/dev

sudo chroot /mnt

grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=linuxmint --recheck
update-grub
exit