This article is useful for people who would have downloaded a .DMG file which runs only on the MAC OS X Operating System and if they are looking to write the file into a CD/DVD in the form of a ISO File. The software here used is called as the MagicISO which can be downloaded as a freeware and installed very easily on your Windows based Computer. We are installing this software to convert a copy of Snow Leopard DMG File which was downloaded from the Internet for testing purpose. Here is the quick process.
Run the Software Application and Browse the DMG File from your computer which is less than 300MB in size because the unregistered version does not support more than this sized files.
Next click on the Properties and Uncheck Apple HFS and Apple HFS+
Click on OK to save as to ISO Image.