<cut a lot of text> Which scsi unit in the chain terminates the scsi chain? In my experience it is a jumper setting on scsi devices in pc parts. The last device on the chain has to be terminated. I've booted and run whithout termination but the system were very strange (ie a scsi cd-rom dissapeared). This was the best url I found with just skimming through it. http://www.wdc.com/products/drives/drivers-ed/scsiterm.html Bjarne