promote another DC to PDC

C:WINDOWS>ntdsutil ntdsutil: At this prompt, type roles and press <Enter>: ntdsutil: roles fsmo maintenance: Now type connections and press <Enter>: fsmo maintenance: connections server connections: Now type connect to servername <serverName> where <serverName> is the name of the backup DC you are working on, and press <Enter>: server connections: connect to servername hamddc02 Connected to hamdc02 …