RLL vs. MFM

From: Fred Cisin <cisin_at_xenosoft.com>
Date: Fri Feb 13 14:10:23 2004

> As I recall, RLL's need a different controller to handle the, ahem....
> "larger" format ;-)

To GET/USE the higher capacity per track, one must, indeed use the
different controller.

But the ONLY difference between a 25M MFM drive, and a 38M RLL
drive is whether the DRIVE can reliably handle a higher flux
density recording. They are quite literally the same drive,
but the MFM drive is not certified/rated for the higher density recording.

Many people would try to go the other way, and use MFM drives with
RLLcontrollers. They would proudly declare that "IT WORKS PERFECTLY".
And later complain about "those crummy Seagate drives" when they found
out the hard way that drives that weren't RATED for RLL recording were
often NOT capable of doing it RELIABLY.

Think in terms of "could you use a diskette that is rated for
double density, if you are going to record single density?"

--
Grumpy Ol' Fred     		cisin_at_xenosoft.com
Received on Fri Feb 13 2004 - 14:10:23 GMT

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