Way 2: Open DMG Files with Disk Image Mounter When the DMG file is verified successfully, it will be opened automatically and you can access it now. Then a box written with 'opening-name.dmg' will be shown. It is treated by macOS as it were a physical disk and can contain the program installation file.ĭouble-click the DMG file in the place where stores it, such as Download folder, desktop, etc. The DMG file is a disk image file of macOS, which is just like the Windows ISO file in some way. So, what is a DMG file? And how to open DMG files on your Mac? Let's find the answer from the following content now.
When you download software from the Internet on your Mac, you may find that the software installation file is a DMG file.