Run command prompt, type the following, and then press ENTER:

dcpromo /unattend /unattendOption:value /unattendOption:value ...

For example, to creates an additional domain controller with the global catalog and installs and configures DNS Server service, use this command:

dcpromo /unattend /InstallDns:yes /confirmGC:yes /replicaOrNewDomain:replica /replicaDomainDNSName: contoso.com/databasePath:"e:\ntds" /logPath:"e:\ntdslogs" /sysvolpath:"g:\sysvol" /safeModeAdminPassword:Chicag0Tech /rebootOnCompletion:yes

When you have typed all the options that are required to create the additional domain controller, press ENTER.