[Warren Eig] “there is nothing about the Mac Pro I own that isn’t capable of running Catalina”
Not to take away from the validity of continuing to use your tower, but I’m not sure the above comment is completely true.
I have a mid-2009 Mac Pro with a Sapphire card that I was able to bump up to High Sierra. At that same point I also bumped up my mid-2014 MacBook Pro. Theoretically both should have been able to run the same versions of everything at that point. However, when I went to upgrade Pixelmator Pro, the MBP was fine, but the older tower wasn’t because of Metal compatibility issues.
Catalina drops support for a number of core technologies. One of these is Firewire i/o support. All of these things affect what will or won’t work. The bottom line for you is to go to Mojave and stop there. Currently there doesn’t seem to be any app that requires Catalina, yet, nor is improved with Catalina. But it’s still early.
– Oliver
Oliver Peters – oliverpeters.com