I keep it plugged into the USB hub that I connect my computer to when it is on my desk. I am using this as a Time Machine backup disk. I followed these directions, and it was effortless. It will reformat the drive in about a minute. Create a name and choose 'Mac OS Extended (Journaled)' assuming you have a current vision of OS-X.
Right click and choose 'Erase' from the pop-up menu.
From the View menu, choose 'Show All Devices.' Select WD Elements on the left side of the window. Here is a slightly updated version of her instructions: Open Disk Utilities. Thanks to Amanda who shared how to format this for a current Mac. Item Dimensions LxWxH: 4.35 x 3.23 x 0.59 inches Product Dimensions: 4.35 x 3.23 x 0.59 inches Offer reliable, high-capacity storage, fast data transfer rates and universalĬonnectivity with USB 3.0 and USB 2.0 devices to back up your photos, videos Style:Portable | Capacity:2TB Western Digital Elements portable hard drives