Chosen Solution
Is it possible to upgrade some of the hardware so that I will be allowed to install Mac OS Catalina 10.15?
Catalina requires 4 GB of memory, an increase over the 2 GB required by Lion through Mojave. iMac: Late 2012 or newer.iMac Pro.Mac Pro: Late 2013 or newer.Mac Mini: Late 2012 or newer.MacBook: Early 2015 or newer.MacBook Air: Mid 2012 or newer.MacBook Pro: Mid 2012 or newer, Retina display not needed.