- A DMG Disk Copy Disk Image File is a special file format by Apple Inc. And should only be edited and saved with the appropriate software. How to solve problems with DMG files Associate the DMG file extension with the correct application.
- What is.dmg file. DMG file is Apple disc image which is used for Mac OS. It comes with.dmg extension. DMG stands for Disc Image File. It has UDIF(Universal Disc Image Format) for Mac OS X with.dmg extension. It is capable for the compressed, encrypted data, file spanning amd some of which are password protected.
In computing world, DMG or (Disk Image File) is a file extension that belongs to Mac OS X. DMG file can also be termed as Apple Disk Image. The icon used equivalent to this file is an Internal Hard-drive. Disk Images are generally used worldwide in-order to distribute applications and software across the Internet.
Did your computer fail to open a DMG file? We explain what DMG files are and recommend software that we know can open or convert your DMG files.What is a DMG file?
DMG files are files that are treated like actual hard disks by the Macintosh OS X operating system. These files can be created with Disk Copy, burned to a CD or even mounted as a normal volume on Macintosh computers. They often contain raw blocks of data that are usually compressed for easier file management.
Some .dmg files may be encrypted in addition to being compressed, for added file security. These files are often used by software installers that download applications from the Internet to a user's computer.
What Is Dmg File Format
The Oracle export and import utility, used by Oracle databases, also uses the .dmg file extension for database dump files that are stored a binary file format.
Software that will open, convert or fix DMG files
Try a universal file viewer
Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.
About File Extension DMG
File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.
If you have additional information about the DMG file format or software that uses files with the DMG suffix, please do get in touch - we would love hearing from you.
Open DMG on Windows
DMG files are not natively supported by Microsoft Windows OS. DMG format is a native Mac OS disk image format which is used to distribute installation packages within Mac OS. In order to open DMG file on Windows you will need a special software which has support for this format.
There are two applications which have the most comprehensive support for DMG file format. They are 7-Zip and DMG Extractor. 7-Zip could be downloaded from https://www.7-zip.org/download.html while DMG Extractor is available from https://www.dmgextractor.com/.
Open DMG file with 7-Zip
7-Zip application has functionality similar to one of file explorer. That means when you open it you can navigate through all your disks and their contents using 7-Zip user interface.
In order to open your DMG file navigate to it using 7-Zip file navigation interface and click on the file name. You can also type a path to your file using an address bar at the top or select File->Open to open a file at specific location.
This will open DMG file contents and you will be able to see what is inside it.
7-Zip will show file sizes, packed file sizes, created, modified and accessed dates for all files in DMG archive.
If you want to extract part of the DMG archive or all of it click on “Extract” button in a toolbar. You will see a dialog where you can enter a destination path for extracted files. It will also show decompressed size of the files to be extracted and other extraction job details.
Open DMG file with DMG Extractor
DMG Extractor is a software which as follows from its name allows opening and extracting DMG files. Free version of DMG Extractor only allows to extract one file at a time which may make process of retrieving files from DMG cumbersome. Thus 7-Zip is still our first choice for DMG file extraction. But if 7-Zip is unable to open your DMG file or you just want to extract one file from DMG then you can try DMG Extractor since it supports many different DMG formats.
In order to open DMG file in DMG extractor click on the Open button in the toolbar. Select the file you want to open and click on Open button in “Open Dmg file” dialog.
After that you will see contents of the DMG file in DMG Extractor main window.
Select files that you want to extract and click on Extract button in the toolbar. DMG Extractor will ask you to select where you want your files to be extracted and after confirming that your files will be extracted to the selected location.
File Format List
If you need to extract more than one time you will need to purchase full license of DMG Extractor or use 7-Zip.