It would help to know more about your system. Do you have a pci scsi adapter card? If that's how you have scsi on your system then is your board recognized?
There arre several commands you can enter at a shell or terminal to see what's going on with that drive. 1st you could look at the start up messages or log, do "dmesg" at a shell and see if your drive is listed there. Also do "lspci -v" at the shell and see if your card is identified, and you might also do "cat /proc/scsi/scsi"
One or all of these commands should give you/us more info to work with.
After we know more we can then determine what driver you need to get the drive recognized.
Hope this helps.