I've got a 500gb WD external drive half full of stuff i need for windows. I want to partition it to fat32 using either OSX or windows 7 so i can store movies and music on there to play through my ps3. I need it to create the fat32 partition on the hard-drive that is currently in ntfs (windows) format, without erasing the 250gb or so of files already stored. Is this possible? If so what program should i use? Will disk utility be able to do this? Thanks