Level 1

10 points

Error 21 when trying to reinstall the operating software

While trying to reinstall Mac OS I get ERROR 21. WHAT TO DO?

Posted on Sep 17, 2021 6:52 AM

Reply

Similar questions

Error 2005f My MacBook is showing error 2005f when l tried to reinstall the macos
4650 1
Error when install macOS Hi support team, My name is Tien I am reinstalling macOS on my iMac, I have this message when trying to reinstall: "an error occurred while preparing the installation. try running this application again" Could you please help me? Thanks team Best regard, Tien
2492 1
I can't reinstall the Mac os I'm getting an error while reinstalling macos sierra "AN ERROR OCCURRED WHILE PREPARING THE INSTALLATION.TRY RUNNING THIS APPLICATION AGAIN"... I tried multiple times But still same error..
3810 2

1 reply

Community Specialist

Sep 18, 2021 7:24 AM in response to shevach

Hi shevach,

It looks like you're having issues reinstalling macOS. If that's correct, check out the following resource.

If an error occurred while updating or installing macOS

This should help.

Cheers.

Reply

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Error 21 when trying to reinstall the operating software

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple Account.

Learn more Sign up