I’m currently setting up my next stepping stone machine: a 2016 MacBook Pro with a 2TB drive. I’ve partitioned the internal drive in two, with Monterey on one partition and Mojave on the other. This way, if I need to run software that’s not 64bit compatible, I choose the Mojave partition as the start up volume and boot up with that, otherwise for newer software that needs a newer OS, choose the other partition with Monterey as the startup and boot up with that instead.
The question is: How do you best handle application installation, and how does SketchUp’s licensing technology see this setup? Can you install an app once on one volume and run it from the other volume/OS? If I install SU on both volumes, is that two installations? No matter the boot volume used, it is one machine with one MAC address, and I seem to remember something about the MAC address being the critical thing to legacy app installations. I could just start trying things, and see what happens, but I thought I’d ask first if anyone had any better informed insights.