It appears to have been a failed upgrade from grub to grub-pc? I attempted solutions from several websites, but nothing worked. In particular, grub-probe -d /dev/sda always failed to detect which filesystem it is (ext3) and prompted for a module. There was an ext2 but no ext3 and I couldn't figure out which module to specify to grub- mkinstall.
Once I realized it might be an upgrade problem, I instead did apt-get install grub-legacy. The machine booted, did some fscking, rebooted, and now appears to be working fine. Linux version 2.6.30-1-amd64 (Debian 2.6.30-6) (wa...@debian.org) (gcc version 4.3.4 (Debian 4.3.4-1) ) #1 SMP Sat Aug 15 18:09:19 UTC 2009 -- cannot boot: GRUB error symbol 'grub_puts' not found https://bugs.launchpad.net/bugs/509797 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