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Level 1

4 points

I have an imac still on catalina. (imac 21.5 2013). How do I upgrade the OS to at least Big Sur?

Need to upgrade OS from Catalina 10.15.7

iMac 21.5″, macOS 10.15

Posted on Feb 22, 2023 2:01 PM

Top-ranking reply

Level 10

471,741 points

Posted on Feb 22, 2023 2:12 PM

A late 2013 iMac can be upgraded to Catalina 10.15.7 but no later. Also see the following from Identify your iMac model - Apple Support

iMac (21.5-inch, Late 2013)

Model Identifier: iMac14,1

Part Number: ME086xx/A, ME087xx/A

Latest compatible operating system: macOS Catalina 10.15.7

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