You are manually partitioning the disk and failed to create an efi system partition. To boot in EFI mode, you must have an EFI system partition mounted in /boot/grub/efi. If you do not wish to use efi, then you must boot the cd in bios mode.
** 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/1300704 Title: error while grub install to /dev/sda To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1300704/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs