Dear Pascal, Hello, I spent some time creating an unattended CD for our Dell 2950's At first I had to do the floppy thing, F6 , etc. for the RAID drivers, but I had attempted what you are trying sithout success. I gave it a break for a few months and came back to it the other day and was successful. Here is what I did: Here is my UNATTENDED section in the winnt.sif file: [unattended] UnattendMode=FullUnattended OemSkipEula=Yes OemPreinstall=yes OemPnPDriversPath="drivers\percsas" TargetPath=\WINDOWS I created a $OEM$\$1\drivers\percsas folder right on the CD root and in that folder, I placed all of the Dell PERC driver files. Okay, next I had to add lines to the TXTSETUP.SIF file, with information pulled from the TXTSETUP.OEM file in the PERC drivers folder. Here is what I added to the end of the TXTSETUP.SIF file - note.....you must scroll all the way to the bottom and place your cursor after the last character, hit enter to get to the next empty line and paste this to the end of this file. [sourceDisksFiles] percsas.sys=1,,,,,,3_,4,1 [HardwareIdsDatabase] PCI\VEN_1028&DEV_0015&SUBSYS_1F011028="percsas" PCI\VEN_1028&DEV_0015&SUBSYS_1F021028="percsas" PCI\VEN_1028&DEV_0015&SUBSYS_1F031028="percsas" [sCSI.load] percsas = percsas.sys,4 [sCSI] percsas = "DELL PERC5 RAID Controller Driver (Server 2003 for x64)",percsas Now, these were from the 64bit driver files, but I don't think it's different for the 32 bit files, if that's the Operating System that you are installing. After I did the MAKECAB command line, I made sure that both the PERCSAS.SYS and PERCSAS.SY_ files were in the AMD64 folder, but for you that would be the I386 folder for 32bit O/S I don't recognize the megasas drivers, but this should work for the 2950. Also, I didn't use any of the [MassStorageDrivers] entries in the WINNT.SIF file. I hope this helps. Tony