> I had this exact same problem yesterday while working on a server for a > client(took me 4 hours). The solution was disabling hostraid in the scsi > bios, because with it enabled it doesn't use the aic79xx driver(it uses > a binary-only aic320 or so). you will loose raid capability but it's not > a big deal(I've been told it's actually made in software) Thanks Juan José for your prompt reply its saves lot of my time . yes disableing Raid solve my problem too . Regards Talha