A DMG file is a Mac OS X system disk image file. Just as the ISO file use in Windows system installations, the files with DMG extension also use on Mac systems. Apple Mac OS X uses the files with.dmg extensions to install a software. If we explain what is the DMG file briefly, the DMG file extension only is used on the Apple MacOS systems.
DMG files are containers for apps in macOS, from which you can install software fast. Installing software simply requires you to open the .dmg file and then drag the application to your Mac’s Application folder. That’s much easier than using an Install Wizard in Windows. However, some of Mac newbies have no idea how to mount .dmg files in macOS or for some reason the .dmg file cannot be opened. Now this page will show you three methods to open and mount .dmg files on macOS.
Method 1: Open .dmg file with DiskImageMounter
DiskImageMounter is the utility that handles mounting disk images in Mac OS X. Normally you can mount a .dmg file on Mac by simply double-clicking it or right-clicking on it and selecting Open With > DiskImageMounter (default). However, some people report that .dmg files cannot be opened on Mac in this way. If that’s the case, move on to another method.
Method 2: Mount .dmg file from Mac OS Terminal
Place the .dmg file on your Mac’s desktop and then follow the steps.
Step 1: Open Terminal on your Mac. If Terminal is not on the Dock, open it from Finder > Applications > Utilities.
Step 2: Type cd ~/Desktop and press Enter key.
Step 3: Type hdiutil attach googlechrome.dmg and press Enter key. Replace googlechrome with your .dmg file name.
That’s it. After you execute the two command lines, the .dmg file will be mounted on your Mac.
Method 3: Mount .dmg file using iSumsoft Bitlocker Reader for Mac
![How To Open A .dmg File On Mac How To Open A .dmg File On Mac](/uploads/1/2/5/7/125750274/671178056.png)
If you cannot open .dmg files on your Mac using either of the first two methods, it’s a good idea to use a third-party utility like iSumsoft Bitlocker Reader for Mac. iSumsoft Bitlocker Reader for Mac is mainly to help unlock BitLocker-encrypted drive on Mac, but it also comes with the Attach feature that can attach disk image on Mac. Here are the simple steps you can take to mount .dmg file using iSumsoft Bitlocker Reader for Mac.
Step 1: Download and install iSumsoft Bitlocker Reader for Mac on your Mac computer. After the installation is complete, launch it from the Launchpad.
Step 2: Click the Attach button.
Step 3: Browse for the .dmg file and select it, and then click Open.
That’s it. The .dmg file is now mounted successfully on your Mac and you can open it. You can also click the Unmount button to unmount the disk image from your Mac if you want.
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- Developer:
- Apple
- File Type:
- Mac OS X Disk Image
- Popularity:
Having trouble opening .dmg extension? Don't panic! This page explains what dmg files are as well as suggests programs you may use to open dmg files. You can download these programs through this page.
What is a DMG file?
Dmg file extension has Mac OS X Disk Image file type, developed by Apple, which is associated with the 'disk image files' category.
Associated with Mac OS X, the file is usually used by OS X software installers. It stores raw block data, which may be encrypted or compressed. Users can access the file via the Apple Disk Utility.
The DMG file format is typically used instead of the .IMG format, which has been previously used in Mac OS Classic. Even though DMG files aren’t meant to be used in Windows, users can still open them with Windows Daemon Tools.
To learn how you can open the given file, read the information below.
- Developer:
- Apple
- File Type:
- Mac OS X Disk Image
- Category:
- Disk Image Files
- Format:
- Binary
How to open DMG file?
Double click the dmg file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .dmg extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.
Method 1: Fix file association errors
Follow these steps in order to automatically fix the dmg extension associations' problem in no time:
- Step 1: Click on 'Download Solution' to download automatic tool provided by WikiExt.
- Step 2: Click 'Start Scan' to identify all potential issues.
- Step 3: Review scan results and click 'Fix Items'.
File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable
This Tool is Compatible With:
Method 2: Download the appropriate software
The given list provides programs which may be used for opening or converting the dmg file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.
Programs that open DMG files
- 7-Zip
- Acute Systems TransMac
- Reincubate DMG Extractor
- DMG2IMG
- DMG2ISO
- Apple Disk Utility
- Roxio Toast 15
- Incredible Bee Archiver
Method 3: Use universal file viewer
In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the dmg file as well. Download Universal File Viewer for your OS.
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