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Adding a Volume of macOS mojave, to a mainly macOS catalina computer.

How can I add a separate volume of macOS Mojave to my computer while still maintaining my Catalina volume?

MacBook Pro Retina

Posted on Mar 14, 2020 10:21 PM

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Question marked as Top-ranking reply

Posted on Mar 14, 2020 11:46 PM

FWIW, If you bought a 2019 16" MacBook Pro that came with Catalina you can't install Mojave.


With any other MacBook Pro it's simple enough to install Mojave on a second volume. You would have to create a Mojave USB Bootable Installer…

How to create a bootable installer for macOS - Apple Support


Add a second volume to your Container and install Mojave to it.

Installing macOS on a separate APFS volume - Apple Support

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Question marked as Top-ranking reply

Mar 14, 2020 11:46 PM in response to The_struggling_apple_guy

FWIW, If you bought a 2019 16" MacBook Pro that came with Catalina you can't install Mojave.


With any other MacBook Pro it's simple enough to install Mojave on a second volume. You would have to create a Mojave USB Bootable Installer…

How to create a bootable installer for macOS - Apple Support


Add a second volume to your Container and install Mojave to it.

Installing macOS on a separate APFS volume - Apple Support

Adding a Volume of macOS mojave, to a mainly macOS catalina computer.

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