You are tying to install to a system that is already set up for EFI mode. You need to boot the install cd in EFI mode to do this. You can tell when you boot it in EFI mode because you get the plain grub boot menu instead of the more pretty syslinux boot menu asking you what language you want to use.
** Changed in: grub-installer (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1545543 Title: Grub fails no matter where I tell it to install and after telling the insdtaller to skip installing gub, it crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1545543/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs