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Hi! After trying to reset the computer, I can't reinstall BigSur - it says permission denied. What can I do?

iMac 21.5″ 4K, macOS 10.14

Posted on Jun 21, 2021 8:37 AM

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why do i get a permission denied response when i try to reinstall the os? why do i get a permission denied response when i try to reinstall the os?
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No longer have necessary permission? I just tried to create new a .cdr image in Disk Utilities for the first time in years and kept getting denied. When I looked at the permissions for my login, I am listed as an Administrator, but it says I have read only privileges. There has never been another administrator on the computer (there are 2 other users with read only privileges), but now for some reason anything I try to do results in a 'you don't have the necessary permission' message. Anyone have any idea what may have happened or how to fix it? Thanks!
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The operation can’t be completed because you don’t have the necessary permission. Opened “Get Info” for main drive, and “admin” and “everyone” are “read only." Unlocking with password, I can’t change them to “Read & Write” status, get message: “The operation can’t be completed because you don’t have the necessary permission.”
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1 reply

Owl-53

Level 10

102,553 points

Jun 21, 2021 10:08 AM in response to CamilleAgenceFDM

Trusted this method was used >>> How to erase an Intel-based Mac <<<

and

This method used to >>>Reinstall from Recovery Mode <<<

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