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

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.
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Mawallace
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Mawallace
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Lee W, MVPTechnology and Business Process AdvisorCommented:
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
http://support.microsoft.com/default.aspx?scid=kb;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
http://support.microsoft.com/?kbid=331161

Commodore.ca | 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."
http://www.commodore.ca/windows/windows_2003_upgrade.htm

How can I transfer some or all of the FSMO Roles from one DC to another?
http://www.petri.co.il/transferring_fsmo_roles.htm

How To Create or Move a Global Catalog in Windows 2000
http://support.microsoft.com/?kbid=313994

[If you run Exchange 2000] Windows Server 2003 adprep /forestprep Command Causes Mangled Attributes in Windows 2000 Forests That Contain Exchange 2000 Servers
http://support.microsoft.com/default.aspx?kbid=314649

Windows Server 2003 Upgrade Assistance Center
http://www.microsoft.com/windowsserver2003/upgrading/nt4/upgradeassistance/default.mspx

[If using R2 release of Windows 2003] Extending Your Active Directory Schema for New Features in Windows Server 2003 R2
http://www.microsoft.com/downloads/details.aspx?familyid=5B73CF03-84DD-480F-98F9-526EC09E9BA8&displaylang=en
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mcsweenSr. Network AdministratorCommented:
You have to do an adprep /forestprep and /domainprep before you can promote your W2k3 DC.
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MawallaceAuthor Commented:
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?
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mcsweenSr. Network AdministratorCommented:
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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