In this case you will need to click a right mouse button on the DMG file and select 'Open' in the popup menu. In some cases, there may not be an 'Open' button on the warning message. Click 'Open' if you know that the file is safe. If DMG file was downloaded from the web Mac OS will display a warning message asking if you really want to open the file in question. You will also see mounted DMG file on the left sidebar in the Finder. It DMG file is only a disk image it will mount it to the local file system and show the files inside it. In order to install the application file, you just need to drag it to the Applications folder. If DMG file is an installation file you will see it open and an application file inside of it will be show next to the Applications folder. The best way to access information inside the DMG file on Mac OS is by clicking on the DMG file.
Most frequently DMG files are used by Mac OS to distribute applications to end users.ĭMG files contain file system information in Universal Disk Image Format (UDIF) or the New Disk Image Format (NDIF). DMG files could be used to store compressed backups of the disks or serve as an installation package.
DMG files could be mounted to the device file system and files inside them easily accessed by the user.
