is Disk Utility error -69842 hardware or directory?

I run OS 10.13.6 on iMac and MacBook, and recently bought a Western Digital 3TB external drive, formatted it for Mac, installed OS 10.13.6 in one large partition (of two) and used it for two weeks. Suddenly (I was trying to remove drive from iMac by dragging icon to trash as per usual) the large OS partition will not mount , the small partition will not unmount; same behavior repeatedly on iMac and MacBook Pro. Disk Utility gave error "Problem -69842", advises reformatting. If this error is hardware related I will exchange the drive before reformatting. If it is just a problem with directories I will buy Disk Warrior or Stellar VolumeRepair and repair it (the files are all there), or maybe reformat it and fill it again (that will require several days but can be done). I need to know what that error means to make this decision of how to proceed. Can anybody help?

Posted on Nov 6, 2018 5:39 PM

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Nov 6, 2018 8:30 PM in response to bws5

"I have confirmed with my Senior Advisor that we do not have access to specific error messages within Disk Utility. If the drive was not able to be repaired via the First Aid utility you will need to pursue options with the manufacturer of the drive, since that does indicate a hardware issue."


Sounds to me you already had your question answered.

Nov 6, 2018 8:10 PM in response to leroydouglas

Yes, I had R/W permissions during the weeks when I was writing to this drive. Now that it will not properly mount, I only have read permission, probably due to my use of some file recovery apps. This would allow me to remove files. But the drive cannot be used. Hence I need to decide whether to try repair or just return it. Hence my question

Nov 6, 2018 8:13 PM in response to BDAqua

No, this is Mac OS extended. It is an old fashioned spinning hard drive. Various data recovery apps can make the files visible. I could therefore copy them to somewhere. But my question: Does the found error indicate that the drive itself would likely fail again, meaning that it should be replaced.

Nov 6, 2018 8:22 PM in response to bws5

I should add that I asked this question of the Apple support chat hotline and the official answer was:

"I have confirmed with my Senior Advisor that we do not have access to specific error messages within Disk Utility. If the drive was not able to be repaired via the First Aid utility you will need to pursue options with the manufacturer of the drive, since that does indicate a hardware issue." So maybe the answer to my question is "hardware" rather than "directory" and I should replace the drive; to have it recovered or reformatted would not be good in the long run if there is a hardware problem. But it would be nice to learn just what -69842 really says to those in the know.

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is Disk Utility error -69842 hardware or directory?

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