A game looks for a disk in the drive it was installed from, so you have to mount mini-image in this drive letter which is simply not possible b/c this drive letter is already taken by the real drive itself.
So it looks like you have to install the game _from the full disk(s) image(s)_, then unmount this image(s) and mount the corresponding mini-image to the same drive letter. Am i right? If yes, then this is not very user-friendly...
