Quoting Park_7677
Word of caution to people with RAID and single HDs. I have 2x 160GB in RAID0 and a 300 GB IDE backup. When I use any unattended install, I have very bad results. This program is great, just be careful during unattended Windows install. What Windows does is erase my partition table on the IDE drive, even before I have any input. I've had this problem with any unattended install of Windows, not just this program. But this program does make it easier for people to create unattended installs and is particularly attractive being able to add RAID drivers onto the CD so I thought I'd mention it. This problem may only be in my case but it really isn't fun worrying rather or not you get your data back.
You have to edit the produced winnt.sif file with the following parameters:
[Data]
AutoPartition=0
MsDosInitiated=0
UnattendedInstall=Yes
[Unattended]
UnattendMode=FullUnattended
OemSkipEula=Yes
OemPreinstall=YES
UnattendSwitch=Yes
FileSystem=LeaveAlone
That will avoid autopartitioning and autoformatting; it removes the complete unattended functionality, but doesn't blitzkrieg your HDD.