And this initial ramdisk is really used and not the older one with the other 3ware module? I ask because /boo/initrd/ is not a default path that Fedora uses. It works but you have to be sure the path to the initrd.img file in the grub.conf matches this path. The default path - used in /etc/grub.conf - is /boot/initrd-2.6.8-1.521smp.img. Alexander /etc/grub.conf contains Initrd /initrd-2.6.8-1.521smp.img I made the ramdisk again with /sbin/mkinitrd -v - f /boot/initrd-2.6.8-1.521smp.img 2.6.8-1.521smp All went well and there were some messages saying the 3w-9xxx module is used After a reboot /dev/sdb is stil there ! After shutdown/power off/power on, everything still ok ! In /etc/sysconfig/hwconf there is driver: 3w-xxxx That's also what I see when using the hardware browser GUI, but it seems to work anyway. Thanks a lot to everybody who helped me out on this. It's a nice experience to meet people who are willing to help without having to pay them. I've learned a lot from your answers. Now I'm going to find out how to mount the array to my file system and share it with a windows client. I guess this will not be my last message :-). Erwin