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Date:      Sun, 30 Apr 1995 21:40:41 -0700 (PDT)
From:      Julian Elischer <julian@ref.tfs.com>
To:        terry@cs.weber.edu (Terry Lambert)
Cc:        bao@saigon.async.com, questions@FreeBSD.org
Subject:   Re: 950412-SNAP Installation with ESDI (WD1007V) System
Message-ID:  <199505010440.VAA01512@ref.tfs.com>
In-Reply-To: <9505010021.AA04511@cs.weber.edu> from "Terry Lambert" at Apr 30, 95 06:21:05 pm

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> 
> 
> So sector 0 is o, sector 1 is 1, and sector 49 is actually sector 52,
> for instance.
> 
> The further into the disk you go, the worse it is.
> 
> This is what is called "non-linear" translation.  This is what the WD1007
> uses to get "perfect media".
unless you use 'slip sectoring' (ther is a jumper for that...
in which case the spare sectors are hidden from BSD as well....
(they are given a sector ID of 0 which is never looked for
by the driver (dos starts at 1 and so teh WD driver in BSD does the same)

> 
> 
julian




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