I opened it in nero, and it wouldn't burn as an image. Then i opened it in magic iso, and tried to convert it to a .iso file, but that didn't do anything. HELP.
The .mds file is created as basically an nfo file for the ISO created by DVD Decrypter. It is used as a set of instructions, telling Imgburn or DVD decrypter where to place the layer break for DL burns. It can also be used for the SL burns.
gamename is right, MDF/MDS images are image files made with Alcohol 120% MDF is basically an CD image file, and MDS is the corresponding catalog file that software such as Alcohol 120% reads. Once the CD image is burned, softwares or movies can then played directly from that CD. Download the trial version of Alcohol 120% from their web for free. www.alcohol-software.com/
MDF....Multi Density Fiberboard. Used in the construction of kitchen cabinets. AKA particle board. LOL