Yes, you're missing something.

The rotor is attached to the hub with 5-6 (can't remember) hex head screws. The
problem is that the hub and wheel bearings need to be undone in order to access the
hex screws, which are behind the hub.

Don't just hammer on it, expecting the rotor to come off.

__________________
Bob
'82 300D Petrol B-G Metallic