Click 'My Passport' on the left side of the program window and then select the 'Erase' tab. Click the 'Mac OS Extended' option in the 'Volume Format' menu, then click 'Erase' to format the drive for your Mac. You can use NTFS file system. By Edward ODaniel| May 26, 2013 2:33 PM PDT In reply to: How to format WD passport to use on MAC and PC.
![My passport for mac support My passport for mac support](/uploads/1/2/5/5/125507810/630027644.png)
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.
![Mac Mac](/uploads/1/2/5/5/125507810/197399015.jpg)
But only if you have windows 7/8 and OSX snow leopard or newer.