I have a 2 TB External Hard Drive that I would like to use to back up my files on my MBP because I will be getting a new one. I understand that I can use my external drive as the back up drive through Time Machine. The problem lies with the fact that I would also like to use my external drive for use with Windows computers. What do I need to do? I believe that I would need to format the external drive to FAT32 format and partition it having one partition as a Time Machine backup and one partition for everything else. Is this correct?