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Software

How can I update macOS from Catalina to Big Sur?

iMac 27″, macOS 10.15

Posted on Mar 4, 2022 12:13 PM

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Question marked as Top-ranking reply

Posted on Mar 4, 2022 12:19 PM

Back up your data, check your applications for compatibility, and if your iMac is a 2014 or newer model, click on Big Sur. If you get a Mac App Store preview page, change the https at the beginning of its address to macappstore.


To look up the programs, click here.


(215183)

4 replies

Mar 5, 2022 4:35 AM in response to ryxtp0

The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.


With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.


Safari will open a redirect and open the Apple Store where the download can commence.


macOS Big Sur 11 hardware requirements



Tips Big Sir Upgrade Released Nov 2020


Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS


Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Catalina, Big Sur & Monterey supports only 64 bit and there is no workaround.


Suggest using Go64 to find 32 bit application before attempting the upGrade. Some or many of the Application already installed may required update or upGrades to 64 Bit Versions.

Software

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