Dmg Format Mac

So you downloaded an .iso image, and now you want to convert it to .dmg format? How can I convert .dmg to a Windows-compatible .iso on Mac? Don’t bother downloading any third party software, you can easily convert .dmg to .iso or .iso to .dmg format using the Terminal or Disk Utility on Mac OS X.

Open Dmg File Mac

Method 1: Convert Between .DMG and .ISO Using Terminal

Mac OS X has a command line tool called hdiutil which allows you to create, mount and convert different types of disk image with ease. Here’s how to convert .dmg to .iso format using the Terminal:

A DMG file, like ISO, can be used to install macOS operating system or Mac apps. If the Mac computer was broken or crashed and couln't get into the system, but you only have access to a Windows PC, there's still a way to make a bootable macOS install USB on Windows.

DMG files are native to Mac OS X and are structured according to Universal Disk Image Format (UDIF) and the New Disk Image Format (NDIF). They can be accessed through the Mac OS Finder application by either launching the DMG file or mounting it as a drive. DMG is also referred to as the Apple’s equivalent to MSI files in Windows PC. In fact, it’s quite simple to convert DMG to ISO on Mac. Considering that, DMG is the native disk image format used by Apple. Apple provides a Disk Utility to help you make the conversion from DMG to ISO with ease. Now you can follow the steps below to convert your DMG file. Step 1 Double-click the DMG file and open “Disk Utility” on your Mac. Open DMG File on Mac OS. Since DMG is a native Mac OS disk image format opening DMG file is as easy as double clicking on it in Finder. When you open DMG file this way, disk image stored inside DMG file will be mounted, and then opened in a separate Finder window. Open DMG File. The usage of the DMG file extension is in the context of a mountable disk image file which is generated by the Mac OS X Operating System platform. Once the file is opened, the system will mount it in a virtual disk located on the user's desktop.

  1. Just press Ctrl + Alt + T on your keyboard to open the Terminal.
  2. Enter the following command into the Terminal window, assuming that you’ve put the .dmg file on your desktop.
    hdiutil makehybrid -iso -joliet -o ~/Desktop/filename.iso ~/Desktop/filename.dmg

    When the process finishes, you’ll get an ISO image that is compatible with Windows, Linux, Ubuntu and Mac.

If you need to convert a disk image from .iso to .dmg, just execute the following command in the Terminal window:
hdiutil convert ~/Desktop/filename.iso -format UDRW -o ~/Desktop/filename.dmg

Dmg format convert

Sit back and wait for the process to complete.

Method 2: Convert Between .DMG and .ISO Using Disk Utility

  1. Just launch Disk Utility (in /Applications/Utilities). In the menu bar at the top of the screen, select Images -> Convert.
  2. Browse to the .DMG or ISO file you would like to convert, select it and click on the Choose button.
  3. In the pop-up window, select Desktop as your destination. In order to convert .dmg to .iso, make sure to choose DVD/CD master as the Image Format. Click on Convert.

    If you want to convert .iso to .dmg, set the Image Format to “compressed” instead. Click on Convert and you’ll have a .dmg file ready to use.

  4. Simply rename the converted .cdr file to .ISO and you’ll get a Mac-compatible .ISO image. However, a renamed file won’t work on Windows or Linux. To make a Windows/Linux/Mac compatible .ISO file, you have to convert the .cdr file to .iso format using this command:
    hdiutil makehybrid -iso -joliet -o ~/Desktop/filename.iso ~/Desktop/filename.cdr

Install Dmg File On Mac

Conclusion

Dmg File Type Mac

DMG is a disk image format commonly used by Mac OS X, but it’s practically unusable on Windows or Linux platform. After converting .dmg to .iso on your MacOS, you can copy it to any Windows or Linux computer for burning or mounting.