(ERROR 21) WHEN TRYING TO RE-INSTALL MONTEREY

Ladies and Gentlemen

this is the solution

please follow the steps below.

: Start Mac in recovery mode (CMDR +R)

: Go to Disk Utility

: View should allow (Show all devices)

: Choose your very top option (Internal APPLE SSD)

: Rename it (Macintosh HD)

: Click Erase

: Allow Disk Utility to finish

: Restart your Mac with SHIFT+OPTION+CMND + R

: Once the internet recovers starts choose reinstall Monterey

Done.

iMac (2017 – 2020)

Posted on Dec 29, 2023 5:38 PM

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1 reply

BDAqua

Level 10

250,253 points

Dec 30, 2023 1:26 AM in response to pointbreak

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(ERROR 21) WHEN TRYING TO RE-INSTALL MONTEREY

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