I have a Seagate 1T drive like this 2T drive that has served me well but this drive and the 4 others before it wouldn't reformat on macOS and didn't work properly, if at all, from time to time. I've worked with Seagate Support using their step-by-step reformat guide, which I always use with no success. Once you plug in a drive, it may or may not show up in Utilities. If it shows up, you can drag the file onto it and move it to the Trash, but you might not be able to delete the file at all, and the next time you plug in the drive, the file might not be there. I got tired of messing around with them, so I went back to my old internal drives and drive hub for backup. Very disappointed I like the one terabyte I have.
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