Click on either of these places to open the DMG file. All you really need to do is double click on the DMG file to open it, and mount it to your Mac.ĭMG mounts in two places: on the desktop and in the Finder sidebar in your hard drive. How to use DMG file?įortunately, MacOS does a great job of making things easy. Saving data usage when downloading is always a good thing. And that's the second reason macOS uses DMG files: They have a compressed format (like ZIP file) that makes the file size smaller. This small window first goes through a file verification phase and then, when it's sure it's a good file, the file will be moved to the decompression process. This is what you see when the file is open: DMG files undergo a 'checksum', basically verifying that the file is 100% intact.
The main reason that MacOS uses DMG files is to make sure the file is properly downloaded and not spoofed.
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