I prefer using the macOS Terminal app to create the bootable USB Installer using commands given in Apple website.
It is similar to DMG’s when you consider the ability to pack multiple files as an archive. The app version of the macOS install package doesn’t have some properties of the DMG version. But when you download from the App Store, the macOS installer has a. They have a direct download link for newer and older macOS versions in PKG & DMG formats.
#Make iso bootable usb os x dmg lion mac os x#
Apple distributes the macOS and apps through the Mac App store ever since the platform’s launch on the Mac OS X Lion.