So I bought this 2 TB HDD. However, I learned of the different formats of Mac (HTFS+) and PC (NTFS). However, 2 TB is too large for only backing up one system. I have however, partitioned the drive into 3 parts. 1 part is 300 gigs with HTFS+, one is 16 gigs in exFAT to act as an USB, and the remaining 1.6+ tb went to PC. However, my MBP does not recognize the "transfer" partition any longer. It used to until I put a pc file on it to test it. Afterwards, it ceases to register. The reason I wanted the Mac partition to be HTFS+ is so that Time Machine can work with it. My current set up almost works the way it is intended, the PC partition works with PC only, mac doesnt recognize it. The mac partition works with backups and the pc doesnt recognize it. This is what i want. However, that 16 gigs of exFAT is only recognized by PC. I want that 16 gigs to be like an USB drive, where i can put PC files and Mac files on to transfer between them. Any way to do this without messing up my previous 2 partitions?