I was asked to install winxp on a 3238-85U model lenovo that came preinstalled with win7. Now I have three partitions showing, C drive, D drive and E drive. I'd like to reduce the size of the D drive partition (Windows7_OS) in order to make room to install anything on the C drive partition (where I've put winxp). I'm logged on as an admin, but am still unable to reduce the size or delete the D partition in any way. Is there a different way to create more space on the C drive?