How to downgrade from macOS Big Sur to Catalina
In this video, I’m going to explain how to downgrade from macOS Big Sur.
Download CleanMyMac X to clean your Mac before you back up your data:
https://bit.ly/33XA40M
Play this video on your phone or any other device to follow the instructions.
Downgrade from macOS Big Sur step-by-step:
Back up your data
Erase your Mac’s hard drive
Use Time Machine to restore your backup or
Create a bootable installer:
Download the macOS Catalina installer: https://itunes.apple.com/gb/app/macos...
The command you need to create a bootable Catalina installer:
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume
Install macOS Catalina
+ Bonus tip: How to speed up your slow running Mac
The app mentioned in this video – CleanMyMac X by MacPaw:
https://bit.ly/33Y2mbs
How to revert to macOS Catalina from Big Sur step-by-step:
https://bit.ly/2PQXoEU
Contents:
00:00 - Intro
00:21 - Back up your data
01:33 - Erase your Mac’s hard drive
02:18 - Restore your Time Machine backup
03:15 - Create a bootable installer
04:38 - Install macOS Catalina
05:19 - How to speed up your Mac