Hands-On Exercise: Unattended Installation of a New Domain
Controller to an Existing Windows Server 2008 Domain
In this exercise, we perform an unattended installation of a new domain controller to an
existing Windows Server 2008 domain. It is assumed that the server is already a member
server of the domain in which it will become a domain controller.
1. Open the Notepad application.
2. Type [DCINSTALL] and press enter.
3. Enter the following lines (each on its own line, as shown here):
UserName=Administrator
UserDomain=LABTEST.LOCAL
Password=P@ssword
ReplicaOrNewDomain=replica
ReplicaDomainDNSName=LABTEST.LOCAL
DNSOnNetwork=yes
SafeModeAdminPassword=P@ssword
RebootOnCompletion=yes
NOTE You will need to replace the username, passwords, and domain names with whatever is
appropriate for your network configuration.
4. Save the file to C:\Unattend.txt.
5. Open a command prompt and run dcpromo /unattend:c:\unattend.txt.
132 Microsoft Windows Server 2008 Administration
Restartable Active Directory Domain Services
Anyone who??™s ever had to support Active Directory Domain Controllers knows how
cumbersome it is to perform maintenance on the Active Directory database. For example,
if you want to perform an offline defrag of the database, you have to restart the computer
and boot into Directory Services Restore mode. Not only does that increase the amount
of downtime for the domain controller, but other services that are not related to Active
Directory, such as DNS and Dynamic Host Configuration Protocol (DHCP), will also be
unavailable while in Directory Services Restore Mode (DSRM) if the domain controller
also performs those two roles.
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