Encounter this problem upgrading from 10.04 to 10.10. Window and Wubi on the same hard drive but different partition.
After restarted, system changed to grub rescue promote, and error message "unknown file" -- grub-pc upgrade renders computer unbootable when Wubi is installed to partition other than Windows https://bugs.launchpad.net/bugs/610898 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