Sven, s> Have you also set "Init="? Good! Hopefully this is legible. Desktops.OpenDoc http://carnot.pathology.ubc.ca/AosTrace.jpg s> The new ATA driver (AosATADisks.Mod) could be a problem ... Seems so. If any additional information will help, let me know. Thanks, ... Peter Desktops.OpenDoc http://carnot.pathology.ubc.ca/