Cant find Enterprise Admins Security Group ? Pls help

Hello

I have notices that we have only one Active Directory DC that is Configured as Global Catalog Server 2008R2 Standard

I was to promote the new Installed DC Windows Server 2012 and got the error that I'm not in the Enterprise Administrators Sec. Group

So i started the search but dident found that on the AD Domaincontroller GC Server or on the other Domain Controller that is not Global Catalog Server.

I have Compared other DC- Servers they have this Security Group.

So pls do some one have a anwser? or have or had a simlar case?

Or is the Enterprise Admins Security Group not a default Security Group (the Type of this Group is Universal)

Thank you!

Kind Regards Mohamad