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how to upgrade from os x 10.9.5

I have a haver an early 2009 mac desktop, how do I upgrade the OS, it is currently os x 10.9.5

Posted on Oct 24, 2022 6:26 PM

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Posted on Oct 24, 2022 6:34 PM

It cannot be upgraded beyond El Capitan 10.11.6 See the following from Identify your iMac model - Apple Support

iMac (24-inch, Early 2009)

Model Identifier: iMac9,1

Part Number: MB418xx/A, MB419xx/A

Latest compatible operating system: OS X El Capitan 10.11.6

iMac (20-inch, Early 2009)

Model Identifier: iMac9,1

Part Number: MB417xx/A, MC019xx/A

Latest compatible operating system: OS X El Capitan 10.11.6

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