27 Jan
2003
27 Jan
'03
9:07 a.m.
Tony Duell wrote:
Oh, not again (this has been a FAQ on this list many times...)
HD disks are different (higher coercivity) to DD/SD disks. Period. That's
why HD disks do not work reliably in DD drives.
However, it is believable that all disks are made as double-sided and the
ones that failed the tests on one side were sold as single-sided...
Whether an ST506/ST412 interfaced drive uses MFM
or RLL encoding depends on the controller, not the drive. RLL wasa method of encoding the
data so
as to fit more of it into the same space without increasing maximum number of transistions
on the medium. IIRC, though, you needed a higher 'resolution' to do this...
I recall the age old DD/HD debate with the floppies - is there really The price would
be exssentially free _if I have one you can use_. I have a fair number of them, of
different types, so knowing a little more about
what you are looking for would help.
You're a good man, Mr Duell! I've formed a plan of action - if the PC1