I read in a book that I can create three partitions on a drive using this terminal command: sudo diskutil resizeVolume disk0s2 220g "MS-DOS FAT32" Data 12g \ "MS-DOS FAT32" Windows 0b. This is supposed to create three partions: one of 220g for running Mac OS, one of 12g for a partition that can be read\written to by both Mac OS and Windows 7, and finally, a partition for the Windows 7 OS. But after I hit return, I get the message: "MS-DOS FAT32 does not appear to be a valid file system format" Then is says to use diskutil listFilesystems to view supported file systems; however, MS-DOS FAT32 is listed there. I'm using version 10.6.8. Any ideas on what I'm doing wrong? Thanks.