To prepare the forest schema for Windows Server 2008

1. Log on to the schema master as a member of the Enterprise Admins, Schema Admins, and Domain Admins groups.

2. Insert the Windows Server 2008 DVD into the CD or DVD drive. Copy the contents of the \sources\adprep folder to an Adprep folder on the schema master.

3. Open a command prompt, and then change directories to the Adprep folder.

4. At the command prompt, type the following, and then press ENTER:

adprep /forestprep

5. If you plan to install an RODC in any domain in the forest, type the following, and then press ENTER:

adprep /rodcprep

6. Allow the operation to complete, and then allow the changes to replicate throughout the forest before you prepare any domains for a domain controller that runs Windows Server 2008

To prepare a Windows 2000 or Windows Server 2003 domain for Windows Server 2008

1. Identify the domain infrastructure operations master role holder (also known as flexible single master operations or FSMO) as follows:

• In Active Directory Users and Computers, right-click the domain object, click Operations Masters, and then click Infrastructure.

2. Log on to the infrastructure master as a member of the Domain Admins group.

3. Insert the Windows Server 2008 DVD into the CD or DVD drive. Copy the contents of the \sources\adprep folder to an Adprep folder on the infrastructure master.

4. Open a command prompt, and then change directories to the Adprep folder.

5. Type the following command, and then press ENTER:

adprep /domainprep /gpprep

6. Allow the operation to complete, and then allow the changes to replicate throughout the forest before you install a domain controller that runs Windows Server 2008.