On 10/18/2015 03:56 PM, Paul Berger wrote:
It goes on to say that when the first read/write drive
(Igar) the hard sector holes where dropped in favour of more usable
surface are. I have seen the diskettes for minnow and and they
where considerably less floppy than the later diskette.
The Memorex 650 accommodated 64 tracks/cylinders instead of the later
and more customary 77. It's worthwhile noting that the 651 implements
FM on the drive--there's no "raw data" signal output.
It is hardly surprising that Memorex followed this
scheme in those
days they where famous poaching engineers and producing clones of IBM
storage products. I remember a customer having a Memorex disk unit
on a string of 3370s and I think you could have swapped parts between
the Memorex unit and a 3370.
IBM occupied a large segment of the market and was a favorite target for
lots of followers. If you just observe the passage of Memorex through
the history of acquisitions and being acquired and sold, it's truly
amazing that Memorex still exists--as a brand of Imation.