HOWTO: Add new partition to existing server

Is there an IBM or other document that details the steps required to add a new Domino partition to an existing production server? I have searched and read all the Administration documentation and they all explain how to setup new servers with partitions. I have tried to add a partition by using the setup program and creating a new data folder but the information seems to get mixed in with the old notes.ini and the application crashes.

Specifically, I need the recommended procedure to add a partition to an existing server.

Subject: Partitioned Server Installation

Are you sure you have checked the Partitioned Server Installation checkbox during the installation?