So I've been trying to get a couple of Securom games made into mountable images, but have been getting nothing but trouble. First my PC decides it can't read DPM, so I try my laptop. That works fine with some games eg. NWN, but refuses to read the DPM from say GTA 4, for some reason. Lets go with NWN as an example.
Even after the image creation process goes well and I copy it to my PC, mount the image with Daemon Tools and use YASU to hide my drives, I get the error "Can't locate or authenticate original disc".
So I have 2 questions. First, what I am doing wrong since I keep getting that error, and second, why can my laptop read some games' DPM just fine and others it gives the all too common "Cannot read DPM with this device"?