I just recently bought a 13" MBP. I had a Seagate Freeagent Desktop HDD that I had previously used for my PC. I dragged all of the important information off of it, and then started up TimeMachine. I want to use a portion of this HDD as my backup for TimeMachine, but I also want to still use it as an external HDD. Right now when I plug the HDD in, it comes up on my desktop with the TimeMachine logo on the drive, and it is called Time Machine Backups. Inside the drive there is the backup that I created. Can I just save to the drive just like an external HDD still, or is it totally devoted to TimeMachine now? Is my wife able to save to this drive still even though she is using a PC? I am very new to this whole Mac thing, and any help would be appreciated. Thanks!