How to Upgrade to Catalina Mac OS X 10.15

Описание: MAC OS X 10.15, Catalina has been released recently.
In this video, find out how to download and upgrade to this OS, including the requirements for your Mac.
WARNING!!! Make sure to BACKUP your Mac using Time Machine before you do this upgrade. If something goes wrong during the upgrade or you don't like the new OS, it's the only way to go back and retrieve your data.

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