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Model A1224 / Mid 2009 / 2.26 GHz Core 2 Duo processor / Education only model

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Upgrade OS to High Sierra?

I have upgraded to El Capitan, but would like to know if the model could be upgraded (clean install) to High Sierra or perhaps Sierra? According to the spec’s listed for the OS X High Sierra, this model should be able to be upgraded to High Sierra.

If it is not able to be upgraded, could you elaborate on why it would not be able too? Thanks

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The Core 2 Duo based systems are not able to run 64bit apps natively.

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High Sierra and Sierra both require a Late 2009 or newer model iMac. Yours is a Mid 2009 model so it cannot run either.

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Slight correction The highest is El Capitan OS-X 10.11.x

iMac "Core 2 Duo" 2.26 20-Inch (Mid-2009)


Oops. Edited.


Is this a limitation of the processor? If a new SSD hard drive were to be installed, would that make a difference? Thanks!


The CPU is the issue not storage. But! Putting in a SSD will improve performance! Installation d'un SSD dans l'iMac Intel 20" EMC 2266

I would also max the RAM to 8 GB. Installation de mémoire RAM dans l'iMac Intel 20" EMC 2266


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Rob sera éternellement reconnaissant.
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