Promoting a Windows 2003 Server to domain controller with Win2K as first domain contorller

Posted on 2006-05-18
Last Modified: 2010-04-18
I am installing a new server to a new site - this will be a Win 2003 server already installed.
Currently on that site is a Win 2k domain controller.
Can I simply use dcpromo to promote the 2003 server, or do I have to run adprep on the Win2k server first as you do if you are upgrading a Win2k to Win 2003 machine.
Question by:Mawallace
    LVL 95

    Accepted Solution

    You will essentially upgrading this to a 2003 domain by adding a 2003 DC.  You have to run ADPREP /FORESTPREP and ADPREP /DOMAIN PREP on the 2000 domain controller to prepare it for a 2003 DC.  If you are adding a 2003 R2 DC, there is another ADPREP you have to run on disk 2.

    Here are some links that should get you going for upgrading a 2000 domain to 2003:

    Common Mistakes When Upgrading a Windows 2000 Domain To a Windows 2003 Domain;en-us;555040

    Hotfixes to install before you run adprep /Forestprep on a Windows 2000 domain controller to prepare the Forest and domains for the addition of Windows Server 2003-based domain controllers | Windows | How To Upgrade Windows 2000 Domain to Windows 2003 Server
    Quote from the top of this article: "Several glossy Microsoft presenters have stated that all you need to do to complete a Windows 2003 Domain upgrade is run ADPREP and then upgrade away.  This may work for very small / simple environments but it is definitely not good advice for most companies.  After upgrading five servers in two unrelated domains and installing many fresh copies of 2003 I can say that I personally would not skip a single step in the process I have developed below."

    How can I transfer some or all of the FSMO Roles from one DC to another?

    How To Create or Move a Global Catalog in Windows 2000

    [If you run Exchange 2000] Windows Server 2003 adprep /forestprep Command Causes Mangled Attributes in Windows 2000 Forests That Contain Exchange 2000 Servers

    Windows Server 2003 Upgrade Assistance Center

    [If using R2 release of Windows 2003] Extending Your Active Directory Schema for New Features in Windows Server 2003 R2
    LVL 21

    Expert Comment

    You have to do an adprep /forestprep and /domainprep before you can promote your W2k3 DC.

    Author Comment

    Lee - I have R2 veriosn of Windows 2003 on the Win 2003 server.

    Do I have to run two versions of ADPREP, or can I just run the one on the second disk that you refer to?
    LVL 21

    Expert Comment

    You only use 1 version of adprep (the one on the 2003 R2 Disk) but you have to run it twice like this:

    adprep /forestprep
    adprep /domainprep

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