How to install Mac Os Catalina on MacBook Air mid 2011 - YouTube
macOS Catalina: Everything you need to know
古いMacBookAirにCatalinaを | Sakanayama Log
My Mid-2010 13 Inch MBP Running Catalina With DosDude1s, 56% OFF
My mid-2010 polycarbonate “Stormtrooper” MacBook! Upgrades include macOS Catalina, a 250GB SSD, 16GB RAM, MacBook Pro keyboard keys, a higher-capacity battery, and a newer wireless card / antenna setup that supports AirDrop. :