I installed 2 copies of XP on a laptop with Partitions C: and D: and used XP boot loader to choose my OS. I needed to cut all access from one drive to the other. I did this using group policy, worked great. Can't see the opposite drive and can't access it with explorer... However If I use a program (ie. a self extracting zip file) from XP on drive D: and C: happens to be the path, it can export to C: still no problem. Any Ideas? I read somewhere that I could do it by making both partitions active? I don't know if it'll work, but i tried and so far my partition editors wont allow it. Do I have to reinstall D: and name both partitions C: ? I know it's complicated but any help is appreciated.