If you have a raid system you are unable to install Vista beta 1, cause there is noway to get to the driver load option (at least for me, nforce 3 user). So i extracted the boot.wim and made and bookable iso from, it is around 250mb. I tried adding the nvraid drivers to the iso but so far without success. I added the inf file's to %image%\windows\inf The .dll and .sys files i added to the %image%\windows\system32\drivers or %image%\windows\system32. I'm not an PE expert so i probably did something wrong somewhere, any help on this is appreciated.