unmount Macintosh HD

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unmount Macintosh HD

I am erasing the hard drive on iMac (2020, Catalina). Message is "the volume Macintosh HD couldn't be unmounted because it is in use by (kextcache).

Tried repairing, message "couldn't unmount disk (- 69565)

iMac Pro

Posted on Apr 9, 2020 10:17 AM

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Answer 1

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John Galt

Level 10

153,568 points

Apr 9, 2020 10:22 AM in response to vicckkii

If you intend to completely erase your Mac's startup disk, please read How to erase a disk for Mac - Apple Support.

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Answer 2

vicckkii Author

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Apr 9, 2020 07:39 PM in response to John Galt

Thank you. I can use, but certainly don't understand the inner workings of my Mac so I always try to follow Apple Support instructions. Using Recovery Internet I was able to solve the problem and reinstall. Thanks again

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Answer 3

Apr 9, 2020 10:21 AM in response to vicckkii

Do it from Internet Recovery

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

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Answer 4

vicckkii Author

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Apr 9, 2020 07:37 PM in response to leroydouglas

Thank you. Using Internet Recovery I. was able to access Macintosh HD. I used repair and then was able to erase. Reinstall was successful

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Answer 5

John Galt

Level 10

153,568 points

Apr 9, 2020 08:02 PM in response to vicckkii

👍

Glad to help.

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unmount Macintosh HD

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