Why I couldn use the image file normally after mounting it in a virtual CD-ROM drive?
It commonly happens on the game CDs, for some game manufactures will add a special protection technology in a game CD. In a “correct settings” environment, Alcohol series software can emulate most of the CD’s, with or without protection. Therefore, we suggest you to try different settings to emulate the hardware requirement for the CD to ensure the image file to be run normally.
