: Visit the Official macOS Catalina Download Page using Safari.
: Once finished, the file named "Install macOS Catalina" will appear in your Applications folder . How to Create a DMG from the Installer macos catalina 10.15.7 download dmg
Apple does not provide a direct standalone DMG file for the full installer on its website. Instead, they provide a link that opens the . : Visit the Official macOS Catalina Download Page