sblk sudo mount /dev/sda2 /mnt
sudo mount /dev/sda1 /mnt/boot/efi
sudo mount --bind /dev /mnt/dev
sudo mount --bind /dev/pts /mnt/dev/pts
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
done
sudo chroot /mnt
grub-install /dev/sda
ls /usr/lib/grub/
grub-install --target=x86_64-efi /dev/sda
update-grub
This solution worked and and recommend