This utility is used to write img files to SD and USB memory devices. Simply run the utility, point it at your img, and then select the removable device to write to. This utility can not write CD-ROMs. Future releases and source code are available on our Sourceforge project: http://sourceforge.net/projects/win32diskimager/ This program is Beta , and has no warranty. It may eat your files, call you names, or explode in a massive shower of code. The authors take no responsibility for these possible events.