External Seagate Hard drive for Mac - Compatibility

Solution 1:

As long as the drive connects to your MacBook Air via a connection protocol that the Air supports like Thunderbolt or USB 2 or USB 3 you can format the drive and use it with your Mac just fine.

To format an external hard drive on your Mac (paraphrased from here):

1. Connect the drive to your Mac
2. Open Applications > Utilities > Disk Utility
3. On the left hand side of Disk Utility you'll see a list of drives. Find your external drive and select it.
4. Select the Erase tab and choose Mac OS Extended (Journaled) for the format and give it a name
5. Press the Erase button to kick off the process. NOTE: This will erase everything currently on the hard drive!