iMac 27-Inch Late 2012 macOS Catalina to Sonoma Upgrade – SOLVED!

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In this video I demonstrate how to upgrade the macOS on an Apple iMac 27-Inch Late 2012 from macOS 10 Catalina to macOS 14 Sonoma without loosing any of your supported apps or files.

This upgrade steps would work fine on other iMac models running macOS 10 Catalina including 21.5-Inch iMacs.

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Thanks for watching and have a blessed and excellent day.
Note: a1easter is the original author of this video, we just embed it, if you have any questions please contact him via Youtube.

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7 Comments

  1. Failed to extract macOS installer. Received “An error occurred while extracting the MacOs Installer. Could b due to a corrupted installer”. Performed twice with same results. Any ideas? Thank you.