[Samba] How to disable the Windows PDC?

[Alan Munday]

I'm looking to migrate the DC functions of an old NT server (running SBS) to Samba.

While I'm nearly ready to complete the migration the one thing I have been unable to find out is how to remove the DC functionality from the old server.

Is it good enough to just demote it to being a BDC? 

I don't want to take the old server off-line as I will be leaving some applications on there for a while.

Any help appreciated.

regards

Alan