@Francesco, grub_term_highlight_color is not a setting, it is a C function. It was removed in the 14.04 version of grub, so if you still have the 13.10 version of grub in the MBR, it is still looking for it and can't find it in the 14.04 grub modules, hence the error. It has nothing to do with 05_debian_theme.
@olly_b, if you have reinstalled then the information is lost. Also 13.04 is end of life and unsupported so you really shouldn't be running it. The installer *does* install grub-efi if you are running efi ( if it didn't you'd never boot ). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1289977 Title: Ubuntu 14.04 Update breaks grub, resulting in "error: symbol 'grub_term_highlight_color' not found" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1289977/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs