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Install AD DS on the First Forest Root Domain Controller

Updated: April 11, 2008

Applies To: Windows Server 2008, Windows Server 2008 R2

The Windows interface in Windows Server 2008 provides two wizards that guide you through the Active Directory Domain Services (AD DS) installation process. One wizard is the Add Roles Wizard, which you can access in Server Manager. The other wizard is the Active Directory Domain Services Installation Wizard (Dcpromo.exe), which you can access in either of the following ways:

  • When you complete the Add Roles Wizard, click the link to launch the Active Directory Domain Services Installation Wizard.

  • Click Start, click Run, type dcpromo.exe, and then click OK.

Membership in the local Administrator account is the minimum required to complete this procedure. Review details about using the appropriate accounts and group memberships at Local and Domain Default Groups (http://go.microsoft.com/fwlink/?LinkId=83477).

Depending on the operating system installation options that you selected for the computer, the local Administrator password might be blank or it might not be required. In this case, run the following command at a command prompt before you start to install AD DS:

net user Administrator <password> /passwordreq:yes

Replace <password> with a strong password.

  1. Click Start, and then click Server Manager.

  2. In Roles Summary, click Add Roles.

  3. If necessary, review the information on the Before You Begin page, and then click Next.

  4. On the Select Server Roles page, click the Active Directory Domain Services check box, and then click Next.

  5. Review the information on the Active Directory Domain Services page, and then click Next.

  6. On the Confirm Installation Selections page, click Install.

  7. On the Installation Results page, click Close this wizard and launch the Active Directory Domain Services Installation Wizard (dcpromo.exe).

  8. On the Welcome to the Active Directory Domain Services Installation Wizard page, click Next.

  9. On the Choose a Deployment Configuration page, click Create a new domain in a new forest, and then click Next.

  10. On the Name the Forest Root Domain page, type the full Domain Name System (DNS) name for the forest root domain, and then click Next.

  11. On the Set Forest Functional Level page, select the forest functional level that accommodates the domain controllers that you plan to install anywhere in the forest, and then click Next.

    If you select any forest functional level other than Windows Server 2008, the Set Domain Functional Level page appears next.

  12. On the Set Domain Functional Level page, select the domain functional level that accommodates the domain controllers that you plan to install anywhere in the domain, and then click Next.

    If you select Windows Server 2008 as the forest functional level, the wizard automatically sets the domain functional level to Windows Server 2008 and Additional Domain Controller Options page will appear next.

  13. On the Additional Domain Controller Options page, DNS server is selected by default so that AD DS can create your forest DNS infrastructure when you install AD DS. If you plan to use Active Directory–integrated DNS, click Next. If you have an existing DNS infrastructure and you do not want this domain controller to be a DNS server, clear the DNS server check box, and then click Next.

    If you have an existing DNS infrastructure and you decide to install the DNS Server service on this domain controller, the wizard may not be able to create a delegation for the DNS server. In that case, the wizard displays a message to indicate that you have to create the delegation manually. To continue, click Yes.

    ImportantImportant
    We recommend that you install DNS when you run the Active Directory Domain Services Installation Wizard. If you do this, the wizard creates the DNS zone delegation automatically.

    ImportantImportant
    Whether or not the DNS Server service is AD DS-integrated, you must install it on the first domain controller in the AD DS forest root domain that you deploy.

  14. On the Location for Database, Log Files, and SYSVOL page, type or browse to the volume and folder locations for the database file, the directory service log files, and the system volume (SYSVOL) files, and then click Next.

    Windows Server Backup backs up the directory service by volume. For backup and recovery efficiency, store these files on separate volumes that do not contain applications or other files that are not directory files.

  15. On the Directory Services Restore Mode Administrator Password page, type and confirm the restore mode password, and then click Next.

    You must use this password to start AD DS in Directory Service Restore Mode for tasks that must be performed offline.

  16. On the Summary page, review your selections.

    Click Back to change any selections, if necessary.

    To save the selected settings to an answer file that you can use to automate subsequent AD DS operations, click Export settings. Type the name for your answer file, and then click Save.

  17. When you are sure that your selections are accurate, click Next to install AD DS.

  18. When you are prompted to restart the server, you can either select the Reboot on completion check box to restart the server automatically or you can restart the server manually to complete the AD DS installation.

For more information about other ways to install a new Windows Server 2008 forest, see Installing a New Windows Server 2008 Forest (http://go.microsoft.com/fwlink/?LinkId=101704).

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