I have an installation of Ubuntu 15.04 that has been working fine for some weeks. Today, my box locked up to the point I had to power it off in order to clear the error. When I did so, it stopped booting.
When booting, it comes up and displays a cursor and nothing else.
I tried following the advice here: http://ubuntuhandbook.org/index.php/2013/11/reinstall-grub-ubuntu-wont-boot/ but when I do so, it gives me this error:
Installing for i386-pc platform. grub-install: warning: this GPT partition label contains no BIOS Boot Partition; embedding won't be possible. grub-install: warning: Embedding is not possible. GRUB can only be installed in this setup by using blocklists. However, blocklists are UNRELIABLE and their use is discouraged.. grub-install: error: will not proceed with blocklists.
Any advice as to what to try next?