I had the same problem with grub installation from grml2hd. I fixed the grub
install by manually repairing grub.
In a shell as root user, initiate grub.
grub> find /boot/grub/stage1
grub> root (hd0,1) (use value returned by find command)
grub> setup (hd0) (use value returned by find command)
grub> quit
reboot |