Marked the bug as invalid (I am the original reporter). I can't reproduce the problem again. After a day, the system rebooted fine. I am performing different tests (smartctl tests) on the hard drive.
** Changed in: grub2 (Ubuntu) Status: New => Invalid -- latest grub2 renders gpt based system unbootable https://bugs.launchpad.net/bugs/576662 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