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Level 1

4 points

what is the best macOS for my iMac mid 2010

I having trouble updating to Sierra 13.0

Is there a better macOS than Sierra for this dinosaur iMac Mid 2010 27"

If so, any recs on how to install it?

iMac 27″, macOS 10.12

Posted on Mar 7, 2023 2:09 PM

Top-ranking reply

Level 10

472,623 points

Posted on Mar 7, 2023 2:17 PM

High Sierra 10.13.6 is the best and also the latest possible. See the following from Identify your iMac model - Apple Support

iMac (27-inch, Mid 2010)

Model Identifier: iMac11,3

Part Number: MC510xx/A, MC511xx/A

Latest compatible operating system: macOS High Sierra 10.13.6

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