Create a Bootable Installer for macOS with Official App In addition, it is also possible to make a bootable macOS installer from DMG file. And Apple provides an official tool to create bootable USB installer from macOS installation app with the help of Terminal command, which is totally free. MacOS is the native operating system for all Mac computers. Create a Bootable Installer for macOS on Mac The other is macOS dmg file, which is made by third-party developers or system administrators. One is the official macOS installation app, which is only available from Mac App Store. Reinstall macOS on Mac from Bootable Installerīefore getting started, you should know there is only two types of installation media for macOS. Create a Bootable Installer for macOS on Windows PC