Thanks for the tip! I needed to be able to run macOS 11 Big Sur in order to run Ableton Live 12 and I'm trying to keep this running as a dedicated backup archiving machine and music workstation. I mis-read the Ableton system requirements thinking it said macOS 10.11... I've never been good at keeping track of the NAMES, and thought 11 Big Sur was macOS 10.11 - *I come from the era of OS X - where everything is just versions of 10!* I was already running 10.14, no sweat! Oops. It clearly says macOS 11 Big Sur. I just bought an upgrade to my Ableton version, and it's easier to run older hardware than it is older software. Your tip should help me run this newer software.