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Error: Secure Disk Erase Failed

1467 Views 2 Replies Latest reply: Dec 1, 2011 10:39 AM by videoexpert1 RSS
videoexpert1 Level 1 Level 1 (0 points)
Currently Being Moderated
Dec 1, 2011 1:32 AM

I am selling my iMac. I want to erase my personal data from the computer but I keep getting an error:

Secure Disk Erase Failed

Secure disk failed with an error:

couldn't unmount disk.

According to this fourm it appears to be a bug in Loin. Does anyone know how to fix this?

  • mulligans missus Level 2 Level 2 (370 points)
    Currently Being Moderated
    Dec 1, 2011 1:41 AM (in response to videoexpert1)

    According to that it has nothing to do with a bug in Lion. Try starting up off your original disc and repairing your hard drive. Zero out all sectors if necessary and then install. If your disk keeps failing to mount, I would suspect the drive has failed. Maybe DiskWarrior or TechTools can repair it.


    Good Luck


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