Addendum to my last comment... after rebooting from busybox the system did come up. So it looks as though the grub-install problem is fixed here.
-- grub-installer fails to install on a raid1 array https://bugs.launchpad.net/bugs/527401 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
