If you use Windows, it is always a good idea to have a Windows 11 or Windows 10 Bootable USB around ... housekeeping to make space for the second OS. It took around 20 minutes.

Go to the Mac OS X Installer.app file, right click and select ‘Show Package Contents’, open the ‘Contents’ directory and then the ‘SharedSupport’ directory. Inside ‘SharedSupport’ is that all ...