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Level 1

4 points

I have a IMAC from 2013 and need to install Mac Os Big Sur - why can't I do that?

iMac 21.5″, macOS 10.15

Posted on Jan 23, 2023 3:10 PM

Top-ranking reply

Level 10

472,695 points

Posted on Jan 23, 2023 3:14 PM

Because Catalina is the last compatible macOS. 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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