How To Mount Dmg File On Mac

5/14/202122.08.2017admin

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DMG files are proprietary disk image files used for software distribution in Mac OS. Providiing both password protection and bzip2-like compression, these files are perfect packaging medium.

I need to mount a.dmg file on windows 7. These are the disk image container files as are commonly used with Apple's OSX. What applications/utilities will do this? I know Daemon tools won't.

Usually DMG files are opened automatically when you click them in Finder. They appear as a folder with files, but actually Finder mounts each DMG file as a separate filesystem and then shows you its contents. If you're observant enough, you'll see that in the left side panell of Finder you have all the active DMG filesystems listed and ready to be ejected once you finish copying the files or installing new software.

Sometimes you may want to download and mount DMG file using Mac OS command line, and in this post I'll show you how to do it

Why would you want to mount DMG files manually?

I've been business traveling quite a bit lately which means I'm most of the time away from my home computer. Naturally, I have configured Remote Desktop access so that I can use my iPad to access my desktop whenever I need, but sometimes it takes forever to do some simple things just because of the graphics environment overhead.

If you're like me, you'll probably find Remote Desktop over 3G to be pretty boring, and will want to do as much as you can via command line.

Mounting DMG with hdiutil command

In order to manually mount DMG file, you'll need to use hdiutil command. You don't have to be a privileged user, so can do it as your own user.

For this example, I'm going to use the command line interface (CLI) for the excellent HandBrake tool, which is great for converting all sorts of videos into iPad and iPhone friendly resolution and mp4 format

Let's mount the image from my dmg file:

As you can see from this output, the mount was successful and you now have the filesystem from DMG package available under the /Volumes/HandBrake-0.9.8-MacOSX.6_CLI_x86__64 directory.

Don't want to to take my word for it? Let's use the standard mount command to confirm that indeed we now have an new filesystem mounted:

Ejecting mounted DMG images from command line

Once you are done with whatever you were trying to do, there's no longer a reason to keep your DMG image mounted, so you should unmount it. While it's possible to use umount command, I think it makes more sense if you use the same hdiutil tool that helped you mouunt the DMG image in the first place.

Here's how you can eject the DMG image using hdiutil:

That's it for today, hope you liked the post! Let me know!

Most Mac OS X users are familiar with disk image files ending with the '.dmg' suffix. Files ending with '.img' are called disk copy files, and are another type of disk image. The icon is a picture of a hard drive on a piece of paper with the corner folded up. IMG files were more common with the OS 9 operating system than with OS X, but can still be mounted on modern Mac computers. If double-clicking on the file does not mount the image, opening the image from the Disk Utility application may work. Failing that, the Terminal application may work.

Double-Clicking to Mount

Step 1

Double-click on the .IMG in the Finder. This will open the image and reveal the file or folder that was used to create the image.

Step 2

Look for the mounted file or folder on your desktop. It will also be displayed in the Finder, located on the left column.

Eject the disk image by clicking on the 'Eject' button next to it in the Finder. You can also eject it by dragging it to the 'Trash' in the Dashboard. The 'Trash' icon will change to an eject button as you drag the file. The mounted file or folder will also be ejected the next time you shut down or restart the computer.

Using Disk Utility

Step 1

Open the Finder and click the 'Applications' folder. Then click the 'Utilities' folder. Double-click the Disk Utility program.

Step 2

Click the 'File' menu. Select 'Open Disk Image.' Select the IMG file in the navigation window and click 'OK.'

Locate your mounted file or folder on the Desktop, or in the left column of the Finder window.

How To Mount A Dmg File In Mac Terminal

Using the Terminal

Step 1

Open the Finder and move the IMG file to your hard disk on the left of the window. This will place it in the root path so you will not have to type the path when using Terminal.

Step 2

In the Finder, click the 'Applications' folder. Then click the 'Utilities' folder. Double-click the Terminal program to launch it.

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Step 3

How To Mount Dmg Files

Type 'hdiutil mount sample.img' (without quotation marks) in the text field, replacing 'sample.img' with the name of your file.