It appears that I used the wrong syntax to specify the location - 'hd8' instead of 'hd0,8'
-- Grub installer failed and installer crashed https://bugs.launchpad.net/bugs/226755 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs