echo "alias scsi_hostadapter 3w-9xxx" >> /etc/modprobe.conf If you need or want the module already during the initial boot, run "mkinitrd" to create a new initial ram disk with all SCSI modules. Alexander My modprobe.conf contains alias scsi_hostadapter ata_piix alias scsi_hostadapter1 3w-xxxx Shouldn't I change 3w-xxxx in 3w-9xxx ? What is the first scsi_hostadapter for ? I already tried alias scsi_hostadapter ata_piix alias scsi_hostadapter1 3w-9xxx And #alias scsi_hostadapter ata_piix alias scsi_hostadapter 3w-9xxx But that did not work. I think an initial ram disk is only neccesary if I want to boot from the raid array. Is that right ? Erwin