Safely Downgrade macOS to Any Version [2024 Guide]

Watch me create a bootable macOS installer and downgrade my 2013 MacBook Pro from macOS Sonoma to macOS Big Sur.  I was able to downgrade my version of macOS in less than an hour.  I also show how I erased and combined unused hard drive volumes into my main volume to completely reset my Mac.

📋 Table of Contents:

Intro: 00:00
Creating a bootable macOS installer: 01:35
Unsupported macOS downgrades: 03:24
Backing up files: 03:47
Erasing macOS HD: 04:05
Installing macOS: 04:52
Troubleshooting tips: 05:43
Combining HD volumes: 06:01

🔗 Links Mentioned:

Mac Model Finder:
https://everymac.com/ultimate-mac-loo...

Last Supported OS Finder:
https://EShop.MacSales.com/guides/Mac...

MacOS Install Page (Apple Support):
https://support.Apple.com/en-us/102662

Bootable Installer Page (Apple Support):
https://support.Apple.com/en-us/101578

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🎥 Behind the Scenes
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