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Date:      Sat, 23 Nov 1996 21:00:50 -0800 (PST)
From:      "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com>
To:        msmith@atrad.adelaide.edu.au (Michael Smith)
Cc:        fenner@parc.xerox.com, msmith@atrad.adelaide.edu.au, freebsd-current@freebsd.org, jkh@freebsd.org, phk@freebsd.org
Subject:   Re: 2.2-ALPHA install failure
Message-ID:  <199611240500.VAA01920@GndRsh.aac.dev.com>
In-Reply-To: <199611240356.OAA23972@genesis.atrad.adelaide.edu.au> from Michael Smith at "Nov 24, 96 02:26:33 pm"

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> Bill Fenner stands accused of saying:
> > In message <199611231117.VAA22545@genesis.atrad.adelaide.edu.au> you write:
> > >You are using an NCR controller, or some other SCSI controller that
> > >reads the partition table out of the MBR.  The 'dangerously dedicated'
> > >mode won't work with these controllers, as they become _very_ confused
> > >by it.
> > 
> > Oh, how scary.  (Yes, I'm using an NCR controller).  If this is really true,
> > then I would think that the install should mention it when it's warning you
> > that you really don't want to use dangerously dedicated.
> 
> It's not until very recently that this has been formally tested.  Rod
> G.  is of the opinion that the problem is at least partly to do with
> the synthetic geometry nominated by the installer, which is quite possible.

Humm... let me see... if I get this right (I don't use sysinstall, but
I have seen this X/1/1 translation thing it does) sysinstall defaults to
a X/1/1 translation, and even goes so far as to write that into the
MBR on a ``dangerously dedicated'' install.

Well, I see the major snafu, 1024/1/1 would be the maximal value that
could be stored in the MBR, giving you a 512K BIOS addressable disk space,
now, gee, why oh why would that be a problem???  :-) :-)  Anyone ever
try to locate a FreeBSD kernel in the first .5MB of a disk?



-- 
Rod Grimes                                      rgrimes@gndrsh.aac.dev.com
Accurate Automation, Inc.                   Reliable computers for FreeBSD



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