I already covered adding Windows Server 2012 as DC to Windows Server 2008 AD environment here –https://www.informaticar.net/?p=1784 . If you want to get rid of Windows Server 2008 DCs from your network, your first step should be transferring FSMO roles from Windows Server 2008 to Windows Server 2012 DC.

This lab is configured as follows

DC2008 – Domain Controller on Windows Server 2008 x64
DC2012 – Domain Controller on Windows Server 2012 R2
HyperV host – machine that is hosting HyperV and DC2012 installation.
Computer Name: DC2008 IP Address: 10.10.10.2
Computer Name: DC2012 IP Address: 10.10.10.3
Computer Name: HyperV host IP Address:: 10.10.10.4
Domain name: test.local

This LAB assumes you already know how to setup AD environment.

I will log onto DC2012 and start command prompt with Administrator privileges in order to check FSMO roles owner

Netdom query fsmo

All my roles are currently on DC2008.

Into command prompt type

ntdsutil

then type

roles

and when fsmo maintenance appears, type in

connections

and press enter.

Server connections dialog will appear.

Type

connect to server DC2012.test.local (you 2012 DC goes here)

After than type

quit

screen will say fsmo maintenance again.

Type ? if you need help on the screen

Type in

transfer schema master

|Confirm with yes

Repeat procedure for other roles: transfer naming master, transfer PDC, transfer RID master and transfer infrastructure master.

Transfer naming master

Transfer PDC

Transfer RID master

Type

Quit

twice to exit

Check again with

netdom query fsmo

command

All is successuly transfered

Next step is to demote Windows Server 2008 DC. Click on link ->

 

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