[SLE]Upgrade to 10.0 grub setup failed

I am trying to upgrade 9.3 to 10.0. After numerous packages failed to load, I finally got to the point where grub was to upgrade. At this point I get an error that it cannot find the hard drive / partition it is looking for. Is there some way that I can get to a command line and find out what is going on. Find out what hard drive it is actually seeing and where it should put grub? I'm afraid of trying to continue, because I am concerned I will lose access to the personal files which I have installed. I can't remember right now if they are ext3 or reiserfs.