Time Machine backup

Since I've upgraded to Mac OS Sierra, my time machine backup has stop working. Any ideas short of clear and start over? I've included a screenshot. Merci.

  1. Go to Preferences > Time Machine and uncheck "automatically backup."
  2. The Time Machine disc
  3. Cut the power on TM drive and disconnect it from the computer
  4. Wait 20 seconds
  5. Plug the drive back in and turn the disk monitor
  6. The drive should mount on your desktop.
  7. Go to Preferences > Time Machine and check "automatically save".
  8. Time Machine should be able to use the disc once more.

Tags: Mac OS & System Software

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