Hello! very usefull post and nice info thank you all!! After reading it I managed to overcome the iaStor.sys error at the setup of win XP to an Fujitsu-Siemens Amilo Xi2428. Using an original XP cd with SP2, added with textmode the appropriate drivers and installation completed with no errors. My problem is that when I tried to add both service pack 3 and drivers and make an unattended installation, when istallation begin I got again the error that iaStor.sys can not be loaded (although I can see my HDD and iastor.sys is loaded and start the install) Is there any way to use nlite for both drivers AND sp3 or I should install SP3 afterwards?? Thank you in advance for your help. Regards, D.