C:WINDOWS>ntdsutil
ntdsutil:

At this prompt, type roles and press :

ntdsutil: roles
fsmo maintenance:

Now type connections and press :

fsmo maintenance: connections
server connections:

Now type connect to servername where is the name of the backup DC you are working on, and press :

server connections: connect to servername hamddc02

Connected to hamdc02 using credentials of locally logged on user.
server connections:

At the server connections prompt type q and press :

server connections: q
fsmo maintenance:

Now we are going to SEIZE the FSMO roles we want. NOTE: Out of the 5 FSMO roles, we are NOT going to seize the Infrastructure Master. We do not want to put the Infrastructure Master (IM) role on the same domain controller as the Global Catalog server. If the Infrastructure Master runs on a GC server it will stop updating object information because it does not contain any references to objects that it does not hold. This is because a GC server holds a partial replica of every object in the forest. For now, we’ll seize the following:

Seize domain naming master
Seize PDC
Seize RID master
Seize schema master