

In Finder check that in Install macOS Catalina.app/Contents directory there is NO file and Frameworks folder. Move the original folder and compressed file in the directory where Install macOS Catalina.

in Terminal window type "cd " - note the space after "d".in Finder navigate to Install macOS Catalina.app > right-click it > Show Package Contents.

On the Mac with Install macOS Catalina.app file open Terminal and change directory to. Put the Install macOS Catalina.app file somewhere on the Mac in the user Home Folder (e.g. This article describes how to upgrade to Mac OS X Catalina using the actual installer.
