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!
Dec 10, 2018 It consists of data blocks that represent a physical disc. If you're on a Windows machine, you're limited in what you can do with DMG files. That's why you need third-party utilities to create a bootable DVD from DMG on Windows. This article explains two different methods to burn DMG files to amake bootable macOS installation DVD in Windows.
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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: November 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
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.
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
Apple macOS / Mac OS X:
Main software associated with dmg file by default: Apple Disk Utility Apple Finder Other suggested software: DropDMG DAEMON Tools for Mac
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Home > Resources > Make Bootable USB Installer from DMG
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DMG file is a compressed file format being used widely on Mac computer. Windows OS doesn't natively support DMG disk image files, so if you need to create a bootable USB drive from a DMG file, mostly for bootable Mac OS X or macOS installation USB, you need a special utility to help you complete the task.
There is also the possibility of converting the file into a format more suitable for Windows, which is the ISO file format for disk images. Considering the above, let's look at different ways to create a bootable drive from a DMG file on a Windows computer.
Part 1: Convert DMG to ISO and Make Bootable USB from ISO
Since Windows doesn't offer native support for DMG files, you can first convert the file to ISO. Why? A lot of easier to find an app for making a bootable USB from ISO file. The easy way to do this is to use Command Prompt. Don't be intimidated by the non-GUI environment even if you don't have any experience. If you follow the steps below, you can convert any DMG file to ISO and then create a bootable USB using the converted file.
Step 1: Open Command Prompt by typing cmd in the Run windows and hitting Enter.
Step 2: In the command interface, go to the directory in which the DMG file is saved. You can do this by using the 'cd' command followed by the file path, then pressing Enter. For example, if your disk image is in D: and Command Prompt is currently in 'C:', then type 'd:' (no quotes) and press Enter. If it is in a subfolder, type 'cd subfolder', and so on.
Step 3: Use the following command to convert the DMG file to ISO:
Step 4: Once the ISO file has been created, you can use a burning tool to create the bootable USB drive. To do that, continue with this guide.
Cons:
File damged or broken after conversion.
Failed booting from burned USB disk.
May not work with the latest DMG file.
Complex and take more time.
Part 2: Create Mac OS X Bootable USB Installer from DMG
Androidphonesoft DMG Editor is a powerful software application for Windows that will allow you to manage the non-native DMG format even if you have no experience. The interface is uncluttered, and you can even use the tool to view files, extract them, edit the DMG and even copy it to a disk. The burn function has one of the highest success rates in the industry, which makes this an ideal utility for our purpose.
Created by the talented team of developers at Androidphonesoft, DMG Editor is currently the most intuitive Windows app for handling Apple's disk image format. Each of its functions have been tested on various Windows versions, with different types of DMG files and on different PC brands. This thorough testing means no wasted DVDs or corrupted files. As long as your DMG file is in good shape, you can directly create a bootable disk.
Step 1 Install DMG Editor
Download and install DMG Editor on your Windows PC.
Step 2 Plug in USB Drive
Launch the application and click on the 'Burn' section. You will also see other modules such as Edit, Extract and Copy.
Step 3 Start Burning ISO File to USB
Now import the DMG file by clicking the 'Load DMG' button, and click on 'Burn'.
In a few moments, your bootable USB flash drive will be ready for use. Since you haven't done any conversion, you can use this directly on a Mac for program installation, which you cannot do with the first method.
Part 3: Create Bootable USB from DMG in Windows Via PowerISO
Another well-known disk image utility is PowerISO. Apart from being ideal for burning ISO files, it can also burn a DMG file to USB to create a bootable drive. There are some settings that you have to keep in mind when burning with this software, but it's easy to get the hang of it once you do it a couple of times.
Step 1: Download PowerISO and install it in your Windows PC. Launch the app and insert a USB drive into a free USB slot in your computer.
Step 2: You can import the DMG file directly by clicking on ‘Burn' in the toolbar or going to Tools >Burn. In the Burn window, select the DMG file from the Source File section.
Step 3:Now review the settings to select the burn speed. The default will be the maximum your hardware can handle, so you can reduce that. You can also choose to finalize the disk and verify it. Finalizing means you can't save any more files on the drive, but it primarily applies to DVDs and CDs. Choosing ‘Verify' will prompt the software to execute an additional process after the burning is done. Any errors in the bootable USB will show up at that point.
Step 4: Now click on 'Burn' and wait for the progress bar to reach 100%. Your bootable USB is now ready.
Cons:
Expensive for a single license.
Higher failure rate for bootable device.
Ugly user interface.
The Bottom Line:
The second two methods are recommended if you don't have much experience working with DMG files, but DMG Editor will appeal to novices and experts alike. The clean interface and minimal user input means a lower chance of errors while creating the bootable media.
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