Here is a copy of my winnt.sif and my winnt.bat files the bat file has a referance to the winnt32 file which will not work under DOS. I dont know how to use the switches to do the unattended install using the winnt file which is used to install a clean system. Winnt.sif ;SetupMgrTag [Data] MsDosInitiated="0" UnattendedInstall="Yes" AutoPartition=1 [unattended] UnattendMode=FullUnattended UnattendSwitch=Yes OemPreinstall=No OemSkipEula=Yes FileSystem=* WaitForReboot=No TargetPath=\Windows DriverSigningPolicy=Ignore NonDriverSigningPolicy=Ignore Hibernation=No [systemFileProtection] SFCQuota=0 [GuiUnattended] AutoLogon=Yes TimeZone=4 OEMSkipRegional=1 OemSkipWelcome=1 AdminPassword=* EncryptedAdminPassword=NO AutoLogonCount=1 [userData] ProductKey=XXXXX-XXXXX-XXXXX-XXXXX-XXXXX FullName="User" OrgName="" ComputerName=Computer [RegionalSettings] LanguageGroup=1 [TapiLocation] CountryCode=1 [identification] JoinWorkgroup=WORKGROUP [Networking] InstallDefaultComponents=Yes Winnt.bat @rem SetupMgrTag @echo off rem rem This is a SAMPLE batch script generated by Setup Manager. rem If this script is moved from the location where it was generated, it may have to be modified. rem set AnswerFile=.\WINNT.SIF set SetupFiles=E:\i386 E:\i386\winnt32 /s:%SetupFiles% /unattend:%AnswerFile% /copysource:lang