How to make a member Domain Controller to the primary Domain Controller in an emergency
So if you can’t recover the Primary Domain Controller then you have no other choice than making a member DC to a PDC. You can seize the roles with ntdsutil.
Run command prompt with domain admin rights:
1. ntdsutil
2. roles
3. connections
4. connect to server MyMemberDC
5. q
6. Seize domain naming master
7. Seize PDC
8. Seize RID master
9. Seize schema master
10. q q
11. dsa.msc
* We don’t seize Infrastructure Master because it should be on another DC where the Global Catalog isn’t installed.
* You can get help in ntdsutil anytime if you just write help and press enter
admin on January 17th 2015 in Windows Server