Thanks for the thread. I have I Plessy 6700 PDP 11/24 work-alike, But its native drive is SCSI. I will Check into alternate controllers / formatters. DEC Model numbering is greek to me Sincerely Larry Truthan Yeah, sure, folks have been doing this for about a decade and a half. See, in particular, ftp://ftp.spc.edu/third-party-disks.txt At a minimum, before getting any further, you're going to need some way to format arbitrary MFM drives to what the DEC controllers will expect for a low-level format, either a VS2000 with its built-in console formatter, or one of the DEC XXDP formatters (ZRQB for the RQDX2, ZRQC for the RQDX3) and a PDP-11 to run them on. -- Tim Shoppa Email: shoppa(a)trailing-edge.com Trailing Edge Technology WWW: http://www.trailing-edge.com/ 7328 Bradley Blvd Voice: 301-767-5917 Bethesda, MD, USA 20817 Fax: 301-767-5927