I have a WD My Passport for Mac (All black) that I’m using for my Time Machine backup. iMac running Sierra version 10.12.5. The drive shows up on the desktop (yellow icon). Later, it will change to a green icon with the circle emblem, and I will get a notification that the Time Machine backup failed. I have to force eject the drive, then reconnect it to get it back up and ‘connected’. This repeats all the time.
I have tried removing the utility and I’ve also run the utility that says everything on the drive is okay.
I’m guessing it may occur when the computer sleeps and I wake it up…
Would appreciate a solution! Thanks!