My Passport for Mac portable storage is ready to use out of the box so you can start transferring files, saving your memories and backing up right away. It comes with WD Discovery software for WD Security to help protect your data and is compatible with Apple Time Machine.
![Mac Mac](/uploads/1/2/5/4/125449435/899815344.jpg)
I'm not sure. When I bought the drive several years ago I only owned that Macbook Pro so it's quite possible I did. What would I need to do to make it recognizable by both? Then it probably formatted as HFS or HFS+ then. There are some free utilities that let you read HFS from windows but not write. OSX can read NTFS but not write. If you plan on regularly moving data back and forth paragon's NTFS on Mac or HFS on windows are highly regarded and fairly cheap.
You only need one. There are a couple of file systems both can read but they don't handle 1Tb very gracefully.
Edit: exFAT would work pretty well for you actually. But only if you have windows 7/8 and OSX snow leopard or newer.