afaik, loader acts as a no cd. You don't need to mount anything with daemon. Just copy the D2loader.exe to D2 folder and change the name of loader to Diablo II.exe
Before u do that, you might want to back up the original Diablo II.exe
Then you click on the loader.exe (of which u changed the name to Diablo II.exe) or any shortcut to Diablo II.exe and voila! your game should load without CD