Reformatting MacBook Pro late 2012

I am trying to reformat my mac book and have erased the macintosh HD -data volume but when I try to erase the macintosh HD it says it can't as it is in use by process 693(kextcache)

Couldnt unmount disk

what can I do?

MacBook Pro 13", 10.15

Posted on Feb 20, 2020 06:45 AM

Top-ranking reply

dwb

Level 7

33,172 points

Posted on Feb 20, 2020 08:26 AM

To erase the drive you have to boot into the recovery partition or Internet recovery. I suspect you haven't.

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1 reply

Top-ranking reply

dwb

Level 7

33,172 points

Feb 20, 2020 08:26 AM in response to anne-marie245

To erase the drive you have to boot into the recovery partition or Internet recovery. I suspect you haven't.

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Reformatting MacBook Pro late 2012