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Child Domain Upgrade

By oisere ·
I have a child domain on my network that needed to be changed to a full domain. I have created a new dns for the new domain. How do I detach the child domain from the current domain without losing the active directory on the child domain.

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by p.j.hutchison In reply to Child Domain Upgrade

I do not think that is possible.
You need to export all the objects from the old domain. Demote the server to a non-dc server, then change dns settings, then dcpromo server for the new domain and reimport the objects again.

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by CG IT In reply to Child Domain Upgrade

you can't "detach" e.g. promote a child domain to a root domain.

When a domain is initially created the first server of the domain is called a root server and has the schema master and domain naming master roles [along with RID, PDC and infrastructure master]. These 2 roles schema master and domain naming master roles are forest wide roles. They are the masters for any domain within the forest. If object attributes are changed which require a schema change the schema master needs to be available or conflicts will result.

Here is a Microsoft KB article on FSMO roles in an Active Directory environment.

http://support.microsoft.com/default.aspx?scid=kb;en-us;223346

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by CG IT In reply to

note: you can move the schema master and domain name master roles to other DCs but you have to seize those roles from the root server and that practice, seizing roles is usually done when a server is retired from service due to equipment obsolesence.

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