11/34A/RK07 not booting. Help wanted

< > >We all make mistakes (or at least I do :-)). It is worth checking thi < > >Why DEC didn't use polarised connectors here is a mystery to me... < > < > This is indeed a bone-headed thing DEC did. I bet a lot of field engin < > were cussing about that. Must have been two different design departmen < > between RK's and RL's (Allison. . . comments?) DEC Field circus created CSSE (Customer Services Support Engineering) to keep an eye on the design, testing and manufacturing processes at the product level to engineer out things like that. That was back in the 70s, by 1991 they put themselves out of business as they had "trained" engineering and manufacturing well. < Yes. On every DEC drive I own (and I guess most others), track 0 is at < the outside edge of the disk and the highest track is closest to the < spindle. Allison/Tim will now post a list of exceptions :-) I'm sure there are exceptions but not many. The oddballs I know of are most fixed head disks and of course drums. Speaking of drums, has anyone seen any out there? Allison