When a single APFS container (partition) has multiple volumes, the container’s free space is shared and can be allocated to any of the individual volumes as needed. “Apple File System (APFS) allocates disk space on demand. What this means is you simply add a second volume and the APFS file system will assign drive space as needed, so you don’t even need to pre-allocate space when making the volume - it’s almost magic. You can now create dynamic volumes on one drive. Historically to create a dual boot computer required the user to partition a drive, or use two different drives, however with macOS Mojave and above, those with Apple File System (APFS) formatted drives, Apple has done some magic. We will update this information once someone has figured out how to do it. One more note: At this present time the latest Mac Pro 7,1 does not allow users to roll back from Catalina. Always back up your drive before making any changes to a hard drive using either Time Machine or a third-party application like Carbon Copy Cloner. WARNING: This article is for information only. It’s easy to do and gives you the flexibility of running a dual boot Mac in minutes. In this article we are going to show you how to install two versions of macOS on one Mac, no reformatting required and all thanks to a handy feature built into modern Macs.
Or you may just be curious and want to try and see if the newest version plays nice. However, you may be stuck between a rock and hard place needing two versions of macOS on your studio Mac.
Here is the Mac Catalina upgrade compatibility article. We’ve always worked hard to keep the studio community informed with our upgrade articles that contain a database of compatible software for the most current version of macOS. Every time a new version of a macOS is announced some are delighted but many who depend on certain software groan knowing a new macOS is going to be a bag of hurt and not play nice with their software.
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