Upgrading MacOS from High Sierra to Catalina

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Level 1

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How do I upgrade MacOS from High Sierra to Catalina on a MacBook Pro (Retina, 15-inch, Late 2013)?

Posted on Nov 2, 2019 06:12 AM

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Answer 1

Top-ranking reply

Level 1

8 points

FYI to all... On the forth try Catalina finally downloaded and I successfully installed it.

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Answer 2

Community+ 2025

Level 10

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Back up your data, check your applications for compatibility, and download Catalina from the Mac App Store.

(175791)

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Answer 3

Level 1

8 points

I have done these steps but Catalina does not download. It starts by displaying “downloading” and “calculating time” but ends with “download”.

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