This way, the installation process has been simplified and users don’t have to suffer the hassle of installation wizards that are plaguing Windows users.Īlthough the installation process sounds simple, it is much more complicated than that. You just need to double-click the downloaded DMG file, drag the app to the Applications folder, then unmount the installer. DMG files serve as containers for apps in macOS. When you download an app or a piece of software on your Mac, the file is usually downloaded as a DMG file.