I upgraded my install from Mandrake 10.1 to Mandriva 2005SE, and now the only way I can boot up is in Failsafe. It completely locks up trying to boot normally. Is there a way to revert back to the previous version without too much of a headache?

I ask because I don't want to wipe the drive and start over because it's dual booted with Win2k and don't want the hassle of having to reinstall everything.