It seems I have this issue (not as drastic, the installer works... somewhat) with 12.04-a2 CD image. Trying to boot it in VirtualBox in EFI mode, the message
error: "prefix" is not set appears briefly, then replaced by "GNU GRUB" menu with 3 usual entries (LiveCD/Install/Check for defects). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/632775 Title: grub-install (EFI) is not properly setting the prefix To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/632775/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
