Installing Macos On A Separate Apfs Volume

  

In past years I've had a spare Mac I could use but that Mac can't run Monterey so I'd like to install Monterey on a separate APFS volume on my M1 MacBook Pro. I've read the instructions here:

https://support.apple.com/en-us/HT208891

but I want to be certain I don't causes issues with the Big Sur installation. Obviously after backing up, I use DiskUtility to create a new APFS Volume.

If I download the macOSBetaDeveloperUtility.dmg and install it, then I think it will give me the option to update the OS (as that's what I did in the past, but it's not what I want to do this year). From screenshots here:

Installing macos on a separate apfs volume download
  1. In default, each Mac has only APFS volume, which can only keep one instance of macOS. To install a new copy of macOS on your Mac, you have to add a separate APFS for holding the additional verison of macOS. You can do this by following the above steps. Step 1: Open Disk Utility app on your Mac.
  2. Video: How to install macOS Big Sur beta on a separate APFS volume Sponsored by Logitech: Get the MX Master 3, MX Keys, and K380 for Mac today! Subscribe to 9to5mac on YouTube for more videos.

https://support.apple.com/en-us/HT208891

I think it will allow me to choose where to install and I can choose the new APFS volume I made for the beta. Is that correct?

Apfs

Installing Macos On A Separate Apfs Volume Control

Installing Macos On A Separate Apfs Volume

And then after the installation, will the Big Sur volume work as before or will software update in it want to update to the Monterey beta instead of letting me do any Big Sur updates that come out this summer?

And then at some point after the official Monterey release, I assume I can just delete the APFS volume I created for Monterey to test my apps and then update the Big Sur volume to the official version of Monterey?

Are there any mistakes in my steps/plans?

Installing Macos On A Separate Apfs Volume 7

Teddy, what can I say. A year later, your answer is just as relevant. A guy like me goofing around trying to install Monterey beta on a separate APFS ended up in such deeper of a rabbit hole that I expected. Countless articles, forums, and videos (okay maybe like 50) constantly led me back to square one. How to Dual Boot Mac that run Two Version of MacOS Big Sur on a Mac. How to install Earlier MacOS on second partition on Mac. Install Two MacOS on one Mac wi.

Installing Macos On A Separate Apfs Volume Download

Thanks,Dave