How to Convert a MacOS Installer to ISO

How to Convert a MacOS Installer to ISO - OS X Daily

Advanced Mac users may wish to convert a MacOS Installer application into an ISO file. Typically the resulting installer ISO files are used for installing macOS into virtual machines like VMWare or VirtualBox, but they can also be used to burn the ISO to media to create a boot disk. This offers an alternative to ... Read More

via osxdaily.com