The RD53s are toast, but is the controller O.K.? I'll lend you an RD54 with some version of VMS on it if you want to try to boot that way. Either way, I have a MVII with some RD54s on it (maxtor 2190s I believe) and maybe a loaner rqdx3. and we can talk about the back door also. BTW, I am coming up on my vacation, so I'll get back to you about the other qbus stuff I have, if you still want an LSI-11 flavor machine... Joe Heck And no, I haven't forgotten Curt, Steve and the many others who have asked about the "stuff" I am getting rid of. During the month of June when I am off from work, I'll get back to all the emails I saved about my equipment.