; DCPROMO unattend file (automatically generated by dcpromo)      
; Usage:      
;   dcpromo.exe /unattend:C:\Users\Administrator\Desktop\123.txt      
;      
[DCInstall]      
; New forest promotion      
ReplicaOrNewDomain=Domain      
NewDomain=Forest      
NewDomainDNSName=contoso.com      
ForestLevel=4      
DomainNetbiosName=CONTOSO      
DomainLevel=4      
InstallDNS=Yes      
ConfirmGc=Yes      
CreateDNSDelegation=No      
DatabasePath="C:\Windows\NTDS"      
LogPath="C:\Windows\NTDS"      
SYSVOLPath="C:\Windows\SYSVOL"      
; Set SafeModeAdminPassword to the correct value prior to using the unattend file SafeModeAdminPassword=      
; Run-time flags (optional)      
; RebootOnCompletion=Yes

主要注释：

dcpromo.exe /unattend:C:\Users\Administrator\Desktop\123.txt，这个是应答文件

NewDomainDNSName=contoso.com，新的DNS名称是“contoso.com”

ForestLevel=4,林功能级别是2008R2      
InstallDNS=Yes，安装DNS服务      
ConfirmGc=Yes，配置GC角色      
CreateDNSDelegation=No，不创建DNS委派      
DatabasePath="C:\Windows\NTDS"，数据库文件路径      
LogPath="C:\Windows\NTDS"，日志文件路径      
SYSVOLPath="C:\Windows\SYSVOL"，SYSVOL路径