Does anybody know how to integrate Mylex raid drivers to NT4 unattended installation CD. CD works well, only raid driver integration causes problems. I have tried almost everything without luck. I have tried following tricks: 1) I put Mylex driverfiles(txtsetup.oem, dac2nt4.inf, dac2nt4.sys) to $oem$\textmode directory, edited winnt.sif with following lines: [MassStorageDrivers] "Mylex EXR2000/3000 & AR160/170/352 Disk Array Controller" = "OEM" "IDE CD-ROM (ATAPI 1.2)/PCI IDE Controller" = "RETAIL" [OEMBootFiles] dac2nt4.inf txtsetup.oem dac2nt4.sys Txtsetup.oem looks like this: ; txtsetup.oem - This file contains descriptions of all ; Mylex Disk Array Controllers supported ; in Windows NT 4.0 (x86). ; ; Version - 3.2 ; Date - 09/11/2001 ; ; Copyright (c) 1994-2001, IBM Corporation [Disks] d1 = "Mylex Driver Diskette (Windows NT 4.0)", \dac2nt4.sys, \ [Defaults] scsi = MDAC2 [scsi] MDAC2 = "Mylex EXR2000/3000 & AR160/170/352 Disk Array Controller" [Files.scsi.MDAC2] driver = d1, dac2nt4.sys, dac2nt4 inf = d1, dac2nt4.inf RESULT: Gives error in boot "File txtsetup.oem caused an unexpected error (18) at line 1041 in F:\nt\private\ntos\boot\setup\oemdisk.c", ---------------------------------------------------------------------------------------- 2) Edit the txtsetup.sif with lines from txtsetup.oem and copy dac2nt4.inf to i386 directory. I added these lines to txtsetup.sif: [SourceDisksFiles] dac2nt4.sys = 1,,,,,,_x,4,1 [SCSI] MDAC2 = "Mylex EXR2000/3000 & AR160/170/352 Disk Array Controller" [SCSI.Load] MDAC2 = dac2nt4.sys,4 I removed "Mylex EXR2000/3000 & AR160/170/352 Disk Array Controller" = "OEM" from Winnt.sif I edited dosnet.inf to include dac2nt4.sys I updated setupdd.sys with newer version from SP3 RESULT: NT4 loads Mylex driver put littlebit later gives blue screen with message Error in setupdd.sys. I tried to use updated version of setupdd.sys without luck. ------------------------------------------------------------------------------------------- I'm really out of ideas now. So can somebody please help me?