Need help with HD EXTERNAL DRIVE FORMATTING FROM PC TO APPLE

WD External Drives External Drives for Mac
2

Welcome to the Community.

In order to have the hard drive working on both Windows and Mac OS you’ll have to format the hard drive as FAT32, which will delete all stored data. I’d empty the hard drive’s content first on the Windows computer before proceeding to format the hard drive.

http://wdc.custhelp.com/app/answers/detail/a_id/291/