How do I upgrade from Yosemite to Catalina OS?
I have gone through both System Preferences and directly to the App Store, but it says there are no updates available and I can't find Catalina. I'm currently using a Macbook Air (13-inch, Early 2014) running Yosemite v10.10.5, which says it supports Catalina upgrade. How do I upgrade to a more current OS? Thanks for any help!
MacBook Air 13″, OS X 10.10