Hi ???? Due to the help from Glen Slick. (The only guy to answer the question as asked.) ???? What to do is interesting. How to do it will get you there. I now have a SCSI drive on the 11/93 that thinks its an RD54 and is trying to boot RSTS/E. It fails gracefully during the boot? giving an error message. So we have a working Hard Drive and Controller on the target system. No to find out what it does not like. The transfer rig is now working OK. So I can try out more drives if needed Rod --