A DMG file is an Apple disk image. Disk images are single files that represent a hardware storage medium like a CD or DVD, and can be mounted on a system to simulate inserting such a disc. DMG files are not used by Windows operating systems, but programs exist to open, convert, and burn them to disc.
- Skill level:
- Moderately Easy
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Download and install the 7-Zip file archiver from http://downloads.sourceforge.net/sevenzip/7z465.exe.>
Double-click on a DMG file to open its contents in a 7-Zip window. If this doesn't work, open 7-Zip, navigate to the location of the DMG file in the large browser pane, and double-click it to open.
Extract files from the DMG by selecting them and clicking "Extract," or simply by dragging them to their desired location from the 7-Zip window. 7-Zip only extracts files from the DMG archive, and cannot burn the DMG to a disc.
Opening a DMG File with 7-Zip
Download and install the trial version of TransMac from http://www.asy.com/sharetm.htm.>
From the TransMac File menu, select "Open Disc Image," then select your DMG file.
Read and extract files from the DMG in the right pane.
To burn the archive to disc, right-click the DMG in the left panel and select "Expand." This will create a new, larger version of the DMG suitable for burning to a CD or DVD. When TransMac asks to open the new file, click "Yes."
Right-click the expanded DMG and select "Burn to CD/DVD," then follow the on-screen instructions.
Opening and Burning a DMG File With TransMac
Download and install the trial version of UltraISO from http://www.ezbsystems.com/ultraiso/download.htm.>
Within UltraISO, click "File," then click "Open."
Browse to and select the DMG file.
Click "Tools," then click "Burn CD/DVD Image."
Burning a DMG File with UltraISO
Tips and warnings
- DMG files containing software designed for Apple operating systems will not install or run properly on Windows computers. You can still extract individual files from these DMGs, and burn them to disc, but you will not be able to install software that was not designed for Windows.
- Trial versions of software like TransMac or UltraISO are usable only for a short period, after which they require paid registration. 7-Zip is freeware, meaning it will never require payment.
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