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Which volume to split into another APFS for Dual Boot

I want to Dual boot my Mac so that I have Mojave and Catalina on the same device. My Mac is currently running Catalina, and with that it brought 2 volumes: Macintosh HD and Macintosh HD-Data. Which volume do i use to add another APFS Volume to dual boot my mac? Thank you.

MacBook Air 13", macOS 10.15

Posted on Mar 28, 2020 3:45 PM

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Posted on Mar 28, 2020 8:24 PM

You don’t need to split either. They both reside in the same container and share the same storage. Just follow John Galt’s link to add another Volume to the container.

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Which volume to split into another APFS for Dual Boot

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