RK05 question

From: Ethan Dicks <dickset_at_amanda.spole.gov>
Date: Mon Jul 12 19:22:32 2004

On Mon, Jul 12, 2004 at 08:09:43PM -0400, Jerome H. Fine wrote:
> I guess there is more to an LLF (Low Level Format) than
> I realized. I had thought that a completely blank RK05 media
> was able to be FORMATed via an RK05 drive.

It can.

> Your answer
> seems to STRONGLY suggest that the media must first be
> SECTORed correctly.

It's not the media, per se... it's the hub that's clamped to
the platter itself...

RK05 media are hard-sectored. There are slits cut in a part of the
hub that serve the same purpose as holes punched in the media of
hard-sectored floppies... they delineate the start of each of the
sectors, in the case of the RK05, either 12 sectors or 16 sectors,
depending on the word-size of the controller, 16-bits or 12-bits.

Note that the bit density is identical - what changes is how the bits
are aggregated into sectors (12 sectors of (N) 16-bit words or
16 sectors of (N) 12-bit words).

-ethan

-- 
Ethan Dicks, A-130-S      Current South Pole Weather at 13-Jul-2004 00:10 Z
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Received on Mon Jul 12 2004 - 19:22:32 BST

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