Date: Sun, 31 Mar 1996 19:11:24 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: Brett_Glass@ccgate.infoworld.com (Brett Glass) Cc: msmith@atrad.adelaide.edu.au, jkh@time.cdrom.com, gibbs@freefall.freebsd.org, jkh@freebsd.org, freebsd-hardware@freebsd.org Subject: Re: Cannot boot after install Message-ID: <199603310941.TAA28942@genesis.atrad.adelaide.edu.au> In-Reply-To: <9602308282.AA828224213@ccgate.infoworld.com> from "Brett Glass" at Mar 30, 96 12:31:07 pm
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Brett Glass stands accused of saying:
>
> > If I recall correctly, the ATA-2 spec says that drives should not default
> > to green mode; you're probably going to have to check with the spec and
> > add some special code to the 'wd' driver to recognise your drive and
> > disable 'green mode'.
>
> I have the kernel code, but am unfamiliar with ATA-2. Anyone here know
> where to get the spec? Also, it might be possible to add a driver flag
> for disabling read-ahead.
Hmm. Let me clarify a few things having browsed the documentation I have
to hand ere.
- The spec I am familiar with is :
working document of the
CAM (Common Access Method Committee)
draft proposal
ATA (AT Attachment)
Rev 2.1 June 11, 1990
... this is obviously not the ATA-2 spec; my apologies for the
confusion there.
- There's no clear indication in the document as to what the drive's
default configuration should be. The spec is pretty cloudy in places 8(
Having said that, it still _seems_ that your drive is not behaving
per the spec. Rather than quote screeds of it here, look for 'ata-21.doc'
(or possibly .zip). I got my copy off gatekeeper.dec.com, you'll probably
do better these days asking http://altavista.digital.com/ for it.
> P.S. -- A week from Monday, you'll see some comments on the FreeBSD
> kernel configuration program in InfoWorld. Check out
>
> http://www.infoworld.com/pageone/opinions/glass.htm
Then or now?
--
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