Hi Thanks for your reply.  Somehow when i install the desktop update icon, it won’t delete the old kernels. So it filled up the root disk (256 MB) thereby it won’t update due to space issues.  I noticed this problem from Ubuntu 18 and up. So i have to delete old kernels manually on Terminal. Unfortunately, since the root disk is full it won’t allow me to update or remove the old kernels.  Thanks  Abd Sent from Yahoo Mail for iPhone On Friday, January 15, 2021, 11:15 PM, Chris Guiver