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The DMG file extension was created by Apple and is primarily used on Macintosh computers and devices. In most cases the DMG file is used to give the Mac devices the ability to install different types of files and software that originate from the internet. The DMG file is essentially a mountable disc image that shows up on your desktop when it is opened. The file contains raw data that is usually both encrypted and compressed. Mac systems treat DMG in the same way they would treat a disc that was inserted and they instantly try to open or “run” the file.
Technical details of DMG files
The DMG file extension was specifically designed for Macintosh computers and users are likely to have a lot of trouble if trying to use them on a Windows device. There may be instances where one can convert the files, but it probably needed to look for additional utilities that will allow the file to be accessed from the chosen device. There are some also executable files that can help with this. However, if the original DMG file was password protected by Apple, those executable applications may not work. The DMG file has several different formats that are used and these include Linux, Fat32, UFS, ProDOS, HFS and HFS+.
More information about the DMG file format
| File extension | .dmg |
| File category | Misc |
| Associated programs | Power Archiver 7-zip Iso Bit Zipper |
| Useful links | Learn more about DMG files |
| Developer | Apple INC. |
DMG is a file of Apple Disk Image. The Apple Disk Images are disk image files commonly used by the Mac OS X operating system. When opened, an Apple disk image is 'mounted' as a volume within the Finder. Several Apple proprietary disk image formats can be used to create these images, including the Universal Disk Image Format (UDIF) and the New Disk Image Format (NDIF). Apple disk images usually have the .dmg file extension.
Apple disk images allow secure password protection as well as file compression and hence serves both security and file distribution functions; they are most commonly used to distribute software over the Internet.
Download Pro Media Tools DMG for Mac FreeDownload Pro Media Tools DMG for Mac Free. Your favorite 3uTools Download for PC. Support for Windows/MAC platforms. 3utools app synchronize,jailbreak your iPhone,iPad,iPod and is free to download.3uTools ready to customize your iPhone,iPad. Read more about DMG files. They are most commonly used by Mac OS computers. Find out how to open DMG files and more.
Universal Disk Image Format (UDIF) is the native disk image format for Mac OS X. Disk images in this format typically have a .dmg extension. New Disk Image Format (NDIF) was the previous default disk image format in Mac OS 9, and disk images with this format generally have a .img (not to be confused with raw .img disk image files) or .smi file extension. Files with the .smi extension are actually applications that mount an embedded disk image, thus a 'Self Mounting Image', and are intended only for Mac OS 9 and earlier. A previous version of the format, intended only for floppy disk images, is usually referred to as 'Disk Copy 4.2' format, after the version of the Disk Copy utility that was used to handle these images. A similar format that supported compression of floppy disk images is called DART. Apple disk image files are published with a MIME type of application/x-apple-diskimage.
Different file systems can be contained inside these disk images, and there is also support for creating hybrid optical media images that contain multiple file systems. Some of the file systems supported include Hierarchical File System (HFS), HFS Plus, File Allocation Table (FAT), ISO9660 and Universal Disk Format (UDF).
Open/Extract DMG File on Windows
Easy 7-Zip opens/extracts DMG file easily on Windows. The Easy 7-Zip was developed based on 7-Zip. 7-Zip is a famous open source file archiver. The Easy 7-Zip is an easy-to-use version of 7-Zip. The open source freeware keeps all features of 7-Zip and adds a few useful features that makes the software more user-friendly.
Easy 7-Zip works on Windows 10/8.1/8/7/Vista/2008/2003/XP/2000 (both 32-bit and 64-bit compatible).
- Free Download Easy 7-Zip
- Install Easy 7-Zip by step-by-step instructions
- The installation will associate DMG with Easy 7-Zip automatically
- Double-click on DMG file to open DMG file with Easy 7-Zip
- Alternatively, Right-click on DMG file on Windows Explorer
- Done
You will see files or folders within the DMG file then, click button Extract to extract the DMG file.
And then, choose Extract files..., Extract Here, or Extract to 'folder' to extract the DMG file.
Easy 7-Zip Download Links:
You can install and use other alternative freeware that opens/extracts DMG file without burning the DMG file to disc. For example:
- Free DMG Extractor
- HFSExplorer
- PeaZip
Open/Extract DMG File on Mac
3utools For Mac Dmg File Extractor
B1 Free Archiver opens/extracts DMG file on Mac. B1 Free Archiver is a free software for creating archive folder and extracting archive file. B1 Archiver works on all platforms - Windows, Linux, Mac and Android. The freeware supports most popular formats including DMG.
B1 Free Archiver is compatible with:
- Mac OS X 10.9 Mavericks
- Mac OS X 10.8 Mountain Lion
- Mac OS X 10.7 Lion
- Mac OS X 10.6 Snow Leopard
Alternative freeware that opens/extracts DMG file on Mac.
- Apple Disk Utility
- Keka
- GUI Tar
Open/Extract DMG File on Linux
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You can use command mount to mount DMG file as a virtual drive.
First, you must login as a root user, and then create a directory for DMG image
| # mkdir -p /mnt/macimage |
Use mount command as follows to mount DMG file called image.dmg:
| # mount -o loop -t hfsplus image.dmg /mnt/macimage |
3utools For Mac Dmg File Opener
If the DMG is HFS file system, use:
| # mount -o loop -t hfs image.dmg /mnt/macimage |
Change directory to list files stored inside an DMG image:
| # cd /mnt/macimage # ls -l |
Unmount the DMG image, type:
| # umount /mnt/macimage |
Alternatively, you can use p7zip to extract the DMG file. p7zip is the Unix command-line port of 7-Zip, a file archiver that archives with high compression ratios.
Install p7zip-full on CentOS and Fedora
3utools For Mac Dmg File Download
| # yum install p7zip-full |
Install p7zip-full on Debian and Ubuntu
| $ sudo apt-get install p7zip-full |
List directories and files in DMG file
| $ 7z l image.dmg |
Extract DMG file on Linux
| $ 7z x image.dmg |