Right guys. I decide to check out Vista finally,installed it on separate Hard Drive,worked perfectly so i decided to leave it. Problem is i cant format Hard Drive with XP when i go to Computer Management n try to format is gives me error "WINDOWS CANNOT FORMAT THE SYSTEM VOLUME ON THE DISK' so im confused. and another think by accinet i made both my hardrives DYNAMIC,how can i change them back to Basic. thanls in advance!