Yesterday I downloaded a developer preview of the upcoming Mac OS X Lion. As we all know, in Mac the extension of an application is DMG. The DMG or disc image can be mounted directly on a Macintosh computer, but if you are working on Windows you have to convert it into a recognizable format. Since I was using Windows 7, I had to convert the OS X image to an ISO file before burning it on a DVD disc. So here is how you can do that.
Out of the many methods to convert DMG file to ISO, the one I felt most reliable is given below.
Download UltraISO here.
UltraISO is a very small shareware utility. It can be used to convert a wide variety of disc image formats, burn, copy, and create bootable disc from file folders. The software is available as a 30 day trial version. So if you just need to convert and burn one or two DMG files in Windows you can make use of the trial period to do that.
After installing the application click on convert option from the top tabs.
Now as shown in the screenshot select the DMG file as input, and output as ISO or any other standard Windows compatible format.
Insert a blank DVD disc and burn the converted image. That’s it.
Update: There is a better way to convert and burn DMG file in Windows if you already have a disc burning software installed. For that download this freeware. Extract the ZIP file to a suitable location.
Right click and open the DMG file. Windows will prompt a box asking you to select a program that can open the disc image. Direct the explorer to the DMG2IMG executable. Within a few seconds, you will find the converted ISO image in the same folder.