WD Easystore is an external drive that is portable and is available in 1 TB, 2 TB, 3 TB, 4 TB, and 5 TB capacities. You can easily back up your personal data like photos, videos, and documents into the external drive. To use it with a Mac device, you have to format WD Easystore and install the WD Backup software. You will need a USB 3.0 or 2.0 cable to connect the drive and Mac device. The WD Easystore external drive is compatible with both Mac and Windows operating systems. The drive also has Time Machine compatibility with Mac devices.Proceed with the steps that are given below to format WD Easystore for mac device.