The 'drum' is the disk itself, the shoes are forced outwards onto the inner surface of the disc when the brake is applied ...
None of you guys changed the shoes before ? I guess if like me, you only ever leave it in park and not bother with the hand (foot) brake ... warning then, this can become seized over time hence my problem of not being able to drive off after my brother -in-law applied the footbrake ... hence the need to remove and change the shoes ...