Issues with BootCamp and mounted windows 8 install disk

I've been trying to install Windows 8 from a mounted Windows 8 System Builder install disk. When I mount the ISO and try to use bootcamp to install windows 8 the bootcamp application will not recognize the install disk I have mounted. Any issues? I've also attempted to install the disk on USB with no luck. The reason I need the mounted ISO is because my DVD drive is busted. I created ISO on a friends macbook pro by using disk utility. I have the dmg file, cdr file, and iso file but have had no luck with any of them. Can anyone help? I'd really like not to have to have to buy an external DVD drive.