DCPOMO on Core 2008 Server – then promote to a RODC

Here is how I demoted core domain controller server to a member server and then used the following unattended file to create a read only domain controller

dcpromo /AdministratorPassword:<password>

Unattend file to make it a RODC

[DCINSTALL]
AutoConfigDNS=Yes
CriticalReplicationOnly=No
DisableCancelForDnsInstall=no

UserDomain=<domain>UserName=administrator
Password=<password>
SafeModeAdminPassword=<password>

SiteName=Default-First-Site-Name

DatabasePath=”%systemroot%\NTDS” 
LogPath=”%systemroot%\NTDS”
SYSVOLPath=”%systemroot%\SYSVOL”

ConfirmGC=no

ReplicaDomainDNSName=<domain.com>ReplicaOrNewDomain=ReadOnlyreplica
ReplicationSourceDC=<servername.domain.com>

RebootOnCompletion=yes