Just seconds after posting this bug, a friend had the right idea (which I seem to remember having read somewhere else before but ignored):
Instead of running install (hd0) doing install --force-lba (hd0) did the trick. I'm 100% sure that I never needed to do this before, but the last grub- install has been a while back, so there might have been something changed. -- Grub not reinstallable after installing Windows https://bugs.launchpad.net/bugs/120020 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs