1001 SETUP has determined that the volume(s) hosting the Active Directory database (NTDS.DIT) or log files lack sufficient disk space. See http://go.microsoft.com/fwlink/?LinkId=91681.
1002 SETUP cannot determine if there is sufficient disk space for the domain controller upgrade. See http://go.microsoft.com/fwlink/?LinkId=91682.
1003 SETUP cannot determine if Windows Server 2008 ADPREP /FORESTPREP and /DOMAINPREP updates exist on this domain controller. See http://go.microsoft.com/fwlink/?LinkId=91683.
1004 Active Directory on this domain controller does not contain Windows Server 2008 ADPREP /FORESTPREP updates. See http://go.microsoft.com/fwlink/?LinkId=91679.
1005 Active Directory on this domain controller does not contain Windows Server 2008 ADPREP /DOMAINPREP updates. See http://go.microsoft.com/fwlink/?LinkId=91679.
2001 Setup has detected that BitLocker Drive Encryption is in use. Please decrypt the volume by turning off BitLocker Drive Encryption via the Control Panel and re-launch Windows Install.
2002 Setup was unable to determine if BitLocker Drive Encryption is in use.
3001 Setup has detected that Remote Installation Services is configured on your server, or Windows Deployment Services is in legacy/mixed mode. To upgrade your server, uninstall this component, or configure Windows Deployment Services to run in native mode.
4002 Setup has detected that Microsoft Windows Rights Management Services (RMS) version 1.0 is installed on this computer. You must either upgrade to RMS with Service Pack 1 (recommended) or uninstall RMS completely.
5001 Setup has detected that FrontPage Server Extensions is installed on this computer. To upgrade your server, uninstall this component.
6001 Setup has detected that Active Directory Migration Tool (ADMT) version 3.0 is installed on this computer. You must uninstall ADMT version 3.0 completely before you can upgrade this computer.