From owner-freebsd-sparc64@FreeBSD.ORG  Mon Mar 28 12:51:17 2005
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Date: Mon, 28 Mar 2005 14:51:14 +0200 (MEST)
From: Michiel Boland <michiel@boland.org>
To: "David O'Brien" <obrien@freebsd.org>
In-Reply-To: <20050326035221.GA3942@dragon.NUXI.org>
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cc: freebsd-sparc64@freebsd.org
Subject: Re: READ_BIG timed out installing 5.4-BETA1 on Blade-100
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On Fri, 25 Mar 2005, David O'Brien wrote:
> On Fri, Mar 25, 2005 at 09:04:35AM +0100, Michiel Boland wrote:
>> Hi. I was trying to install 5.4-BETA1 on a Blade-100 off cdrom using a
>> serial console. Unfortunately the install does not get past the initial
>> kernel initialization. It hangs with the messages
>> acd0: TIMEOUT - READ_BIG retrying (2 retries left)
>> acd0: FAILURE - READ_BIG timed out
>> repeated ad infinitum.
> Sun seem to have tweaked the firmware on the CDROM drive they put into
> the Sun Blade 100's.  You can most likely install by issuing
>
>    hw.ata.atapi_dma=0
>
> at the loader "OK" prompt (stop the default count-down).

That worked! I needed to add a "set" command in front of the assignent of 
course. I put hw.ata.atapi_dma=0 in /boot/loader.conf.

Thanks
Cheers
Michiel