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From: Robert Nordier <rnordier@iafrica.com>
Message-Id: <199608290027.CAA00393@eac.iafrica.com>
Subject: Re: Determining disk type & size
To: luigi@labinfo.iet.unipi.it (Luigi Rizzo)
Date: Thu, 29 Aug 1996 02:27:28 +0200 (SAT)
Cc: hackers@freebsd.org
In-Reply-To: <199608282135.XAA01269@labinfo.iet.unipi.it> from "Luigi Rizzo" at Aug 28, 96 11:35:09 pm
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Luigi Rizzo wrote:
> 
> > Most of the userland code I've looked at doesn't seem to handle this
> > very elegantly, where it checks.  And some of my attempts to do the
> > obvious seem to produce inconsistent results (below).

> > ----- fdtest output -----
> > 
> > ./fdtest /dev/fd0
> > sectors per cylinder: 158 [<-- 30 expected]
> 
> 158 = 30 + 128
> maybe bit 7 is not significant, or used for different purposes.

Good point, which may also explain why the value is sometimes > 1024
on another disk in the same drive.

I guess it just means: read through the code line by line before
using any of this stuff.  Meaningful variable names only encourage
assumptions. :(

--
Robert Nordier