Re: Disks for 9114B ? Message #12 Posted by Andrés C. Rodríguez (Argentina) on 7 May 2009, 8:16 p.m., in response to message #7 by Eric Smith
Of course, Eric is right and more precise than me about the coercitivity issue.
I did some design with 3.5" floppy drives back in 1989 and also found important differences between similar units from different maunfacturers (IIRC, we were using mostly Fujitsu drives with our 64180-based data capture device). I think that the ability of a DD drive to write on HD media may also differ from one drive manufacturer to other. In my particular experience, HD media performed well when used in DD drives, but I cannot deny the chance for higher error rates that were perhaps masked by software or brute-force retries, and being not that apparent (at least for me). One funny thing that happened with some very slim drives we used in some units, was that a particular brand of diskettes seemed to require more rotational torque, and we detected many cases in which the specific combination of those drives and those disks, with some dirt added, resulted in more service calls than all other combinations.
Of course, sometimes we don't have all the brands and options available here, and also... while I enjoy recalling stories from the past, I realize my comment have gone way OT, so I apologize.
Edited: 7 May 2009, 8:18 p.m.
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