If you know grub really well, and your partition layout really well, you can manually specify all the parameters and commands necessary to boot at the rescue prompt starting with the "prefix" which is probably set to the wrong drive.
Please package the upstream fix for ubuntu before this disasterous bug gets into the wild!
This bug should have a very high priority.
It is a known bug in GRUB and it is already fixed upstream: savannah. gnu.org/ bugs/?35382
http://
This bug prevents (U)EFI systems from booting.
If you know grub really well, and your partition layout really well, you can manually specify all the parameters and commands necessary to boot at the rescue prompt starting with the "prefix" which is probably set to the wrong drive.
Please package the upstream fix for ubuntu before this disasterous bug gets into the wild!