Maybe grub error 18 is not a bug itself, but I think ubiquity should avoid install /boot beyond the lba limit.
** Package changed: ubuntu => ubiquity (Ubuntu) -- GRUB error 18 will not boot ubuntu or windows https://bugs.launchpad.net/bugs/386369 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
