Q. How can I install a domain controller (DC) from backup media by using a Dcpromo answer file?

A. To create a DC from a backup during the Dcpromo process, add these two entries to the answer file:

ReplicateFromMedia=Yes
ReplicationSourcePath=&ltmedia_source_path&gt

Your answer file entries should look something like this:

[Unattended]
UnattendMode=FullUnattended

[DCInstall]
AllowAnonymousAccess=No
AutoConfigDNS=No
DatabasePath=&ltDb_Path&gt
LogPath=&ltLog_Path&gt
SysVolPath=&ltSysVol_Path&gt
Password=&ltUser_Pwd&gt
UserDomain=&ltNet_Bios_Domain_Name&gt
UserName=&ltUser_Name&gt
ReplicaDomainDNSName=&ltDNS_Domain_Name&gt
CriticalReplicationOnly=No
ReplicaOrNewDomain=Replica
SafeModeAdminPassword=&ltsafe_mode_pwd&gt
RebootOnSuccess=Yes
ReplicateFromMedia=Yes
ReplicationSourcePath=&ltmedia_source_path&gt
ConfirmGC = Yes