I have a user with Windows XP Pro laptop and one HDD partitioned in 2. One partition is the C: drive and the second is P: Drive. The user can't install any software , he gets error 1327 Invalid drive D. I have gone under computer management and try changed the P drive to D but it doesn't allow me to. When we tried to install any software we change C to D or P to D but nothing works. Any help to get this resolved asap will be great.