Let's get this straight. You have 2 disks, a new one with 2 partitions, one of which is installed with a new clean XP & the other with your previous installation that was on a different drive. The second disk is now blank. Correct me if I'm wrong. You need to access an efs folder created on another installation and the only way to do that is to log onto the old install & decrypt the folder from there. Can you be more specific about why you can't log onto the old install?