Can I use the same external drive for a PC and a Mac? I want to take an external drive, and use it for both a PC and a Mac, by swapping it back and forth. I'm new to Macs and I don't know much, but I heard that Macs can't read NTFS, only FAT 32 if the drive is formatted through Windows; and furthermore, Windows can't even read any Mac formatted drive. If this true, is there anyway to make the same external drive work for the PC and the Mac?