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Erase process failed "The volume Macintosh HD on disk1s5 couldn't be unmounted because its in use by process 674

After getting the above message when trying to erase a mac pro for return to Apple, how to best proceed to erase the drives?


Posted on Jan 6, 2020 7:16 AM

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Question marked as Top-ranking reply

Posted on Jan 6, 2020 7:19 AM


Boot to Internet Recovery— option command R

Recovery: https://support.apple.com/en-us/HT204904


What to do before you sell, give away, or trade in your Mac ...


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Erase process failed "The volume Macintosh HD on disk1s5 couldn't be unmounted because its in use by process 674

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