As the USB question has arisen I thought I might try thing one again.
I've got a USB 2.5" HD enclosure with a 3 GB disk in it
I only recently have done similar.
cat /proc/scsi/usb-storage-0/0 Host scsi0: usb-storage Vendor: Cypress Semiconductor Product: USB2.0 Storage Device Serial Number: 000000030515 Protocol: Transparent SCSI Transport: Bulk GUID: 04b468300000000000030515 Attached: Yes
Have a look at fdisk -l it should list all partitions known. It may not necessarily show up as sda, since you have a scsi CD writer allready.
Once you know the sdx (I'd guess it will be /dev/sdb1 or something) you could add to /etc/fstab:
/dev/sdb1 /mnt/my_usb_hd auto noauto,owner,rw 0 0 Make a directory /mnt/my_usb_hd of course..
Then mount with 'mount /mnt/my_usb_hd' .
That's how I did it. I also played around with /etc/security/console.perms and setup so that an ordinary user could mount my disk.