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Date:      Thu, 20 Oct 2005 00:11:04 +0100
From:      Graham J Lee <leeg@teaching.physics.ox.ac.uk>
To:        Peter Grehan <grehan@freebsd.org>
Cc:        freebsd-ppc@freebsd.org
Subject:   Re: panic booting install CD
Message-ID:  <4356D288.9040404@teaching.physics.ox.ac.uk>
In-Reply-To: <4356243F.6090703@freebsd.org>
References:  <006601c5d406$ea0a8f20$13b46743@TIM> <4355CD0D.50301@freebsd.org> <3CEE03B7-701F-47B4-9283-B8AB6B657DEC@teaching.physics.ox.ac.uk> <4356243F.6090703@freebsd.org>

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Peter Grehan wrote:
>> When you say "booting manually", do you mean something like:
>>
>>  > boot cd:,\boot\loader cd:X
>> where X is some number?  If so, I haven't tried doing that on my  
>> sawtooth and could see if that yields different results.
> 
> 
>  That's right

Sadly I get the same panic when I do that on my hardware.  Equally sadly 
I'm no kernel programmer so my attempt to chase down the panic by 
looking at the current rev of kern_mutex.c didn't yield anything.  A 
pity because I'd like to get FreeBSD working on this machine and then 
see if any userland needs tweaking (my C skills do at least run that 
far) - so if there's any way I can help track down this problem I'd like 
to do that.  For instance:

> Graham J Lee wrote:
> 
>> Graham J Lee wrote:
>> 
>> Are there instructions (i.e. I've searched, and can't find any) on creating a chroot build environment for FreeBSD under Darwin?  If so, I could compile FreeBSD onto the target device from OS X, then try hacking until I can isolate the panic...
>>
> Oh hang on, I know why that wouldn't work... :-)

Actually, I probably *could* create a bootp environment so that the 
Sawtooth boots the kernel over the network then tries to use the 
filesystem on the CD as its root, would that work?  Could I use that to 
attack the kernel problem?  How would I build the FreeBSD kernel under 
Darwin?

Cheers,

Graham. [enthusiastic, if somewhat out of depth]



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