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A dmg file extension is used for default disk image format in Mac OS X (macOS) that replaced the older IMG format. It is used much like ISO images on Windows platform.
There is one other file type using
the DMG file extension!
.dmg - Oracle binary format dump data
Software that open dmg file
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DMG file extension- Apple Mac disk image
What is dmg file? How to open dmg files?
File type specification:
dmg file icon:
The dmg file extension is associated with disk image files created for Mac OS X (macOS).
The DMG file format is used for mountable disk images, which can be opened (mounted) with the Finder a default file manager included in OS X (macOS).The dmg files can also be mounted in most popular emulation utilities.
The dmg file type is a replacement for the older IMG format used in Mac OS Classic and is not compatible with Mac OS 9 or earlier.
Apple DMG format is one of the most used format to install new applications to the Mac OS X (macOS).
By default, Apple Disk Image DMG file uses Universal Disk Image Format (UDIF) to store data, but it can use another file systems, like HFS, HFS+, FAT, UDF, or old New Disk Image Format (NDIF) compatible with Mac OS 9. This feature facilitates for example creation of hybrid optical media with multiple file systems for various platforms.
It can be protected by password (AES-128, or AES-256 encryption) as well as compressed by some compression formats (ADC, Zlib, bzip2).
DMG MIME type:
application/x-apple-diskimage
Updated: March 8, 2019
The default software associated to open dmg file:
Company or developer:
Igor Pavlov
A free file archiver developed by Igor Pavlov featuring higher compression ratios with LZMA and LZMA2 compression.
It is mainly available for Windows platform (for Mac and Linux are available command line tools) and is the primary program to handle 7z archives. However, also supports various compression file formats.
Supported formats:
Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z
Company or developer:
CrystalIdea Software Inc.
AnyToISO is disk image converting tool. It is able to extract and convert variety of popular disk image formats, such as NRG, MDF, UIF, DMG, BIN, DAA to ISO disk image format. It is available in ten languages.
Company or developer:
Apple, Inc.
A disk utility distributed with Mac OS X / macOS operating system, Apple Disk Utility offers tool for configuration and format of new disk partitions, mount disk images, create, burn, or convert disk images.
Company or developer:
Apple, Inc.
Finder is the native file management utility in macOS (OS X) operating system. With Finder you can browse your computer directory structure, search files, work with files, do basic file/folder operations (copy, paste, remove, delete, rename etc.), mount disk images, connect to other computers on network, burn files etc.
Company or developer:
Apple, Inc.
macOS is Unix-based desktop operating system, a successor of Mac OS X system for MacBook-family, iMac, Mac Mini and Mac Pro computers, developed and sold by Apple, Inc.
Company or developer:
Apple, Inc.
OS X or Mac OS X is Unix-based operating system developed by Apple Inc. for Macintosh computers. It contains basic core applications for everyday use, such as Finder basic file manager, Safari for Internet browsing, QuickTime for video, iTunes for managing audio data and iPod, iOS devices management , iMessage instant messaging, Mail, Contacts, Calendar and many more.
The latest version 10.11 of OS X is called El Capitan. It is available to purchase on Mac App Store as well as is distributed with new Mac computers and notebooks. It includes features to improve the security, performance, design and usability.
OS X operating system was replaced by new macOS in 2016!
Company or developer:
Kelley Computing
FreeDMG is utility used to create Apple DMG disk images. With this software it is possible to quickly perform disk imaging on the fly. Both the program's window, and the dock icon can be used for drag-and-drop imaging.
Related articles:
Help how to open:
On Mac you can open/mount DMG images in all related programs, because it' native Mac format.
Apple Disk Images are also open-able in various apps in Microsoft Windows, like 7-zip, PeaZip, DMGExtractor, etc., but apps (*.app files) stored in them cannot be run, because they are written for OS X (macOS) system. Documents, pictures, videos and multimedia files can be opened in compatible Windows apps.
How to convert:
You can use ISOBuster for a conversion .dmg disk images to another disk image file format like NRG Nero disk image format or ISO disk image format.
You can use PeaZip to a conversion of DMG format to another archive file format. PeaZip also supports extraction of DMG format. Extracted files can be compressed in to another archive file format, that PeaZip supports (7Z, ARC, BZ2, GZ, PAQ/ZPAQ, PEA, QUAD/BALZ, TAR, UPX, ZIP).
Find conversions from dmg file:
Find converter to dmg file type:
File identification strings:
HEX code: 78
ASCII code: x
List of software applications associated to the .dmg file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open dmg file, edit dmg file, convert dmg file, view dmg file, play dmg file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting dmg files.
Dmg Urogram Software
Software that open dmg file - Apple Mac disk image
Programs supporting the exension dmg on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open dmg file action.
Microsoft Windows:
Main software associated with dmg file by default:
7-zip
Other suggested software:
gBurner
DMGExtractor
PeaZip
HFSExplorer
TransMac
PowerISO
PCDmg
Dmg Urogram Center
Apple macOS / Mac OS X:
Dmg Urogram Ct
Main software associated with dmg file by default:
Apple Disk Utility
Apple Finder
Other suggested software:
DropDMG
DAEMON Tools for Mac