Doug, A copy of NS* dos on media is not as desirable as on line. The reason for this is I am debugging a suspected bad controller. In the past I've found that bad NS controllers can accidently do uncommanded writes to the disk rendering it useless. Also if thge media is DD the working SD controller I have. I do have legal copies of 4.0, 5.0 and 5.2 but single density only. An online copy or a SD disk with a copy of the DD ns* works better for debug. What I would do is to load the dos into EEprom so I can load it and execute it quickly if the controller can't. Allison <I think I do. I will have to go through several boxes to find them. Give <me a day or two to find them. < <Doug < <At 10:13 PM 10/14/97 -0400, you wrote: <> <>Is there anywhere on the net northstar* dos version 5.x for DD controllers <>My archives only have the single density version. <> <>Allison