Catalina to Monterey OS update fails - help

While updating from Catalina to Monterey, this installation failed error occurs. My startup disc has sufficient space. How would I go about this? Help is appreciated.




[Edited by Moderator]

Mac mini, macOS 10.15

Posted on Apr 7, 2024 7:50 PM

Reply
6 replies

Apr 8, 2024 2:19 PM in response to RICHARDKASIKA

RICHARDKASIKA wrote:

Thank you PRP_53 - very good observation - I'd completely missed update vs upgrade. Would you suggest I re-install Catalina say from Recovery mode at startup? Or is there a way I can determine what Catalina update I may have missed.. Once that's resolved do you think I can then proceed and Install the upgrade to Monterey? Thanks again for taking the time.

Welcome


You can try the method you mentioned via Recovery Mode.


The unknown is if it will pull the Catalina upDate or bypass and download either macOS 11 Big Sur or possibly macOS 12 Monterey


I would lean towards bypass Catalina and going directly to Monterey


Keep us posted of the results.


Time permitting 😎

Apr 19, 2024 5:06 AM in response to RICHARDKASIKA

RICHARDKASIKA wrote:

Reinstalling Catalina through recovery mode worked perfectly. After that, the missing (security) update was installed, and then I upgraded to Monterey. These three steps have all gone very smoothly. Thank you PRP_53 for your help with this.

Thank you for the update


You are welcome and very pleased it has all worked out


Do come back to the Apple Support Communities ( ASC )  in the future if additional questions may arise


It is a good place to get answers to sometimes difficult questions

Apr 8, 2024 1:44 PM in response to PRP_53

Thank you PRP_53 - very good observation - I'd completely missed update vs upgrade. Would you suggest I re-install Catalina say from Recovery mode at startup? Or is there a way I can determine what Catalina update I may have missed.. Once that's resolved do you think I can then proceed and Install the upgrade to Monterey? Thanks again for taking the time.

Catalina to Monterey OS update fails - help

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.