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User profile for user: zeeshan_dharbor
zeeshan_dharbor Author
User level: Level 1
5 points

How to Downgrade from Big Sur to Catalina?

How can we downgrade to Mac OS Catalina? Mac Os Big Sur is the most unstable and has made my iMac too slow and unresponsive, please need help.

iMac 21.5″ 4K, macOS 11.1

Posted on Dec 28, 2020 7:46 AM

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User profile for user: leroydouglas
leroydouglas
Community+ 2024
User level: Level 10
188,502 points

Dec 28, 2020 7:49 AM in response to zeeshan_dharbor

zeeshan_dharbor wrote:

How can we downgrade to Mac OS Catalina? Mac Os Big Sur is the most unstable and has made my iMac too slow and unresponsive, please need help.



Revert to previous macOS 

https://support.apple.com/en-za/guide/mac-help/mh15216/10.15/mac/10.15




  How To Downgrade macOS Big Sur To Catalina Or Older ...

https://www.macworld.co.uk/how-to/downgrade-macos-3581872/

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How to Downgrade from Big Sur to Catalina?

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