What Is a DMG File?

What Is a DMG File?

How to Open, Edit, and Convert DMG Files

A file with the DMG file extension is an Apple Disk Image file, or sometimes called a Mac OS X Disk Image file, which is generally a digital restoration of a physical disc.

For this factor, a DMG is typically the file format used to keep compressed software installers rather of needing to use a physical disc. You’ll more than likely only see them when downloading Mac OS software from the internet.

This macOS disk image format supports compression, file spanning, and file encryption, so some DMG files might be password secured.

Variations of Mac newer than OS X 9 support DMG files, while the older Mac OS Classic uses the IMG file format for the same function.

Note: DMG is also an acronym for some technology terms that aren’t connected to the Mac disk image file format, like Direct Mode Gateway and Diversity-Multiplexing Gain.

What Is a DMG File?

How to Open a DMG File on a Mac

DMG files are intended for Macs, so opening one on a Mac is very basic.

A DMG file is “installed” as a drive and is dealt with by the operating system as if it were a physical disk drive, making it truly simple to view its contents. The software application you download for your Mac in a DMG format can be opened like any other file on a Mac, and then the setup program can be gone to install the software.

How to Open a DMG File in Windows

A DMG file can definitely be opened in Windows, however that doesn’t indicate you can really use anything you discover within it.

For instance, say a DMG file isn’t simply storing compressed files like images and videos but is instead holding a software program. You can draw out, or open, the DMG file in Windows utilizing one of the programs pointed out below, however you can’t really carry out the program and use it like you would another Windows application. To use the same program in Windows, you need to download the Windows version, not the Mac DMG variation.

Nevertheless, presuming the DMG file simply includes files like images or videos (which are most likely in a format that’s likewise compatible with Windows), or you want to just see what’s inside the DMG file, you must have no issue utilizing one of the below programs to view them.

Windows can open a DMG file with any compression/decompression program that supports the format. PeaZip and 7-Zip, both totally free, assistance opening DMG files in Windows.

Tip: If you have problem opening DMG files by double-clicking them, even if you have PeaZip or 7-Zip installed, try to right-click the DMG file and use the context menu. For instance, 7-Zip opens DMG files via 7-Zip > Open archive.

DMG Extractor (the paid version) is handy if you require to do more with DMG files than just uncompress them.

SysTools DMG Viewer is excellent if all you want to do is want to see what’s in the DMG file. Catacombae HFSExplorer can see DMG files on Windows, too (and Linux), but also lets you develop brand-new DMG files. Both programs are completely complimentary.

A complimentary tool called dmg2iso will transform the DMG image file to an ISO image file, which is far more usable in Windows. If you require to mount a DMG file in Windows, however do not wish to convert it to ISO first, a few programs do support this, like WinCDEmu, Virtual CloneDrive, and Prismo File Mount Audit Package. Newer variations of Windows support ISO installing natively.

How to Convert a DMG File

As we pointed out above, dmg2iso can be used to transform DMG to ISO. dm2iso is a command-line tool, so you may require to reference the download page for directions on the syntax and other rules. Likewise on the download page is a DMG to the IMG tool if you require to transform the file to an IMG file instead.

AnyToISO works the very same way as dmg2iso but is much easier to use. The program is totally free however only for files that are no larger than 870 MB.

Some totally free file converters can convert DMG files to a range of other archive formats, like ZIP, 7Z, TAR, GZ, RAR, and others. CloudConvert and FileZigZag are two notable examples.

To convert DMG to PKG (a macOS installer package file) needs that you first extract the contents of the DMG file and then build a new PKG file utilizing that data. See this tutorial on the Spirion Support Portal if you require assistance.

You can not convert DMG to EXE if you wish to use the DMG file in Windows. DMG files are for Macs and EXE files are for Windows, so the only way to use a DMG program on Windows is to download its comparable from the developer (if one exists); there aren’t any DMG file to EXE file converters.

Note: Again, even if you can draw out a DMG file in Windows, and even transform a DMG to a Windows-readable format, does not constantly mean that the contents of the DMG file will all of a sudden end up being compatible with Windows. The only way to use a Mac program or a Mac video game in Windows is to download the Windows-equivalent variation. If there isn’t one, then neither converting nor drawing out a DMG file will be of any use.

If you wish to make a bootable DMG file, you do not need to worry about converting it to a USB format with any of the tools mentioned above. The whole DMG to USB process is possible with a tool like TransMac. Just right-click the USB drive in that program and after that select Restore with Disk Image, and after that you can boot to the USB drive to run the DMG program.

Still Can’t Open the File?

If none of the strategies discussed above have actually been valuable in opening the DMG file in Windows, macOS, or Linux, there’s a really likelihood that you don’t actually have a DMG file. This might happen if the file extension has been puzzled for DMG.

For example, the DGML file extension looks a lot like DMG although the two are unassociated. The former is used for Visual Studio Directed Graph Document files and opens with Microsoft’s Visual Studio.

GMD is another example of a similar looking suffix that’s booked for GameMaker Program Code files and GroupMail Message files. Again, neither formats are related to the DMG Mac file format, so if your file actually ends in one of those extensions, you need GameMaker or GroupMail installed in order to use the file.

Morris T. Parson, Tech Support

Leading specialist in electronics and engineering. Author of dozens of articles on various topics from the world of hi-tech. Sound independent analysis of products, exploring new niches and global trends is his special passion.

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