The installer file was from going via system pref then software update.
I just removed the previous install and downloaded a fresh installer but still have the same message?
I have a MacBook Air 13″ Early 2015 with MacOS Majave 10.14.6.
I get the below message when trying to install MacOS Catalina – any ideas?
“you must be running macos catalina 10.15 or later to install on this volume”
See attached screenshots to.