Partition Map Error


MyPassport Drive suddenly stopped working properly after a few months only.

Model: WDBYNN0010BBL USB 3.0 (USB 2.0) 1 To Windows/Mac


  1. It doesn’t show up on my Mac
  2. I see it in the DiskUtility under the wrong name and info (see screenshot)
  3. I ran SOS and got this message:
    Problems were found with the partition map which might prevent booting

Any idea of what my next steps should be?



If you were using this drive earlier with Windows then you need to reformat the drive accordingly, please follow the link-

If still not working then follow this link-

More info: