A: Answer The Mac Operating System uses a different file format system than Windows does. This drive comes formatted for Windows. Thanks to the Time Machine backup program being built into your MacBook, when you connect this drive to your MacBook, after a moment, it will ask you if you want to use this drive with Time Machine. Just select Yes, and your MacBook will take care of formatting the drive for you. Just acknowledge the message that it will erase all data on the drive (there is nothing on the drive when you first buy it anyway, except a couple basic utilities which are not needed), and then your computer does the rest for you.

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