The Ubuntu Server 18.04 is unable to log in.
The Ubuntu Server 18.04 is unable to log in.
It seems you're facing the same issues on both your Ubuntu server and an older PC. The problem involves a grub installation error with value 0006,0000, and you've tried several fixes without success. You're wondering if upgrading the BIOS is necessary due to hardware age.
I upgraded the BIOS and tried some other unusual steps, then finally solved my issue this way: https://askubuntu.com/a/957662/1592751. It isn’t a full resolution—GRUB still fails each time and the Ubuntu setup isn’t finished (some third-party tools I requested aren’t installed). However, it lets me use my computer with an Ubuntu server at least, and it seems to work. I tested it on Ubuntu Server 20.04 LTS and 22.04 LTS as well.