I find this workaround works for me. Reinstall GRUB with
sudo grub-install --module="part_msdos" --root-directory=(your_mount) (your_dev_file) It's able to reboot now. To make it easier for later kernel updates, just put part_msdos into grub-install line "modules=" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/852579 Title: Grub does not access /boot/grub under fakeraid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/852579/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs