The version of macOS on the selected disk needs to be re-installed.


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Posted on May 5, 2023 12:58 AM

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Posted on Nov 25, 2023 4:39 PM

MacOs System Files are on a separate locked volume, not writeable. if something, somehow, manages to modify anything on that locked Volume, it is detected quickly. 


... and this is exactly the situation you are now in. Your locked, crypto-protected system Volume has failed its integrity check, and your MUST re-install a fresh copy (and it will be crypto-locked anew) to make progress.


I don't think restoring from a backup counts, and recent versions of Time machine no longer save or attempt to restore the System Volume. It must be re-constrcuted through a new install to be trusted.

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Question marked as Top-ranking reply

Nov 25, 2023 4:39 PM in response to sidy97

MacOs System Files are on a separate locked volume, not writeable. if something, somehow, manages to modify anything on that locked Volume, it is detected quickly. 


... and this is exactly the situation you are now in. Your locked, crypto-protected system Volume has failed its integrity check, and your MUST re-install a fresh copy (and it will be crypto-locked anew) to make progress.


I don't think restoring from a backup counts, and recent versions of Time machine no longer save or attempt to restore the System Volume. It must be re-constrcuted through a new install to be trusted.

May 5, 2023 3:10 AM in response to sidy97

Hi,

In that case, try to reformat and reinstall macOS with Recovery mode.

You lost all data if you haven't taken backup, though.

Use macOS Recovery on a Mac with Apple silicon - Apple Support

If it doesn't help, try to take your MacBook Pro to your local retail Apple Store, Genius Bar or Apple Authorized Service Provider to install macOS from the scratch. As far as I know, it's free.

Genius Bar Reservation and Apple Support Options - Apple

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The version of macOS on the selected disk needs to be re-installed.

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