Migrate from Server 2003R2 to 2008R2. Can't find domain if old DC is disconnected.
Posted on 2013-05-14
I just migrated from Server 2003R2 Standard to Server 2008R2 Standard. I upgraded the old domain to 2003 native mode. Performed forest prep. When I performed the adprep / domainprep /gpprep I got an error. so I ran just the domainprep switch and got a reply that the changes had already been made. I connected the 2k8 to the domain, set static IP for IPv4 and IPv6, installed Active Directory Domain services, ran DC Promo, allowed install of DNS. I moved all FSMO roles. If I run netdom query fsmo all lines show the new DC and it is the primary DC. Just to check to make sure everything is working, I removed the network cable from the old DC. When it is disconnected, not even the new DC can find the domain. I have pointed DNS to the new server including the server itself and all workstations and the old DC. Is this possibly a DNS problem, or did I have a bad migration and should start from scratch. I only have about 15 users.