Software > System Software > macOS > macOS Catalina
To get started, you will first need to have
* A high-speed internet connection (ISP fees may apply).
* Sufficient data storage available for the download.
* A blank Flash/Pen/Thumb/USB Drive with at least 16 GB of space.
* A blank Dual-Layer or Double-Sided DVD.
Download macOS Catalina with the Mac App Store.