Could you please issue the following commands: sudo apt-get update sudo apt-get install grub sudo dpkg-reconfigure grub and tell me if the updates work afterwards? Seems some files related to the GRUB configuration got corrupt.
Could you please issue the following commands:
sudo apt-get update
sudo apt-get install grub
sudo dpkg-reconfigure grub
and tell me if the updates work afterwards? Seems some files related to the GRUB configuration got corrupt.