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Catalina on external HD?

Can I install Catalina on an external HD and preserve Mojave on my MBP?

MacBook Pro 13", macOS 10.14

Posted on Nov 7, 2019 11:02 AM

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Question marked as Top-ranking reply

Posted on Nov 7, 2019 1:45 PM

Here's how: Upgrading macOS without fear - Apple Community

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Catalina on external HD?

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