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how do update my computer to macOS catalina

i need to update to macOS catalina. how do I do it?

iMac 21.5″, OS X 10.11

Posted on Jun 15, 2020 11:10 AM

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Posted on Jun 15, 2020 11:25 AM

See the following (including the Compatibility section): How to upgrade to macOS Catalina - Apple Support

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