Comment 18 for bug 704763

It gets worse!!!! After trying all the suggested ways of restoring the boot sector and failing, I used the live cd to re-install xenial, with the other two internal drives I have, disconnected. Ubiquity on the lat April testing version) - showed grub being installed, and update-grub being run. BUT when re-booting, I got the grub error prompt. It seems the problem's been there for a while!