Ive searched online and the forums here and no one appears to have an answer. What is the OEM Preinstall option for? I realize it copies $oem$ but what is this used for? Is this related to what type of xp cd you are using???? Not sure whether to enable or disable this, and more importantly why. Why is this option offered? I am not using RAID or SATA so should I leave this enabled or disabled?? It would be great to get a real explanation of this option.