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Date:      Thu, 17 Jan 2002 17:25:32 -0500 (EST)
From:      Mike Brancato <funnyguy@digitalsmackdown.net>
To:        Ian Dowse <iedowse@maths.tcd.ie>
Cc:        freebsd-current@FreeBSD.org
Subject:   Re: boot floppy problems... 
Message-ID:  <Pine.LNX.4.21.0201171724390.5037-100000@dosmonos>
In-Reply-To: <200201171940.aa68346@salmon.maths.tcd.ie>

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no problem.
keep up the good work.

mike

On Thu, 17 Jan 2002, Ian Dowse wrote:

> In message <Pine.LNX.4.21.0201170805060.3093-100000@dosmonos>, Mike Brancato wr
> ites:
> >oh, well.  They say something along the lines of
> >"Disk error: lba is 0x9 (should be 0x10)"
> >or similar.  then it trys to boot the kernel twice using the loader, but
> >fails with the path 0:fd(0,a)/kernel
> 
> Hmm, the error is actually "Disk error 0x9 (lba=0x10)". I think
> this is my fault. Error 9 is "data boundary error (attempted DMA
> across 64K boundary or >80h sectors)", so by changing the buffers
> to being static in revision 1.35 of boot2.c, I broke the guarantee
> that single transfers don't cross a 64k boundary, which is important
> for floppies :-( I'll fix this shortly. Thanks for pointing out the
> problem!
> 
> Ian
> 
> 


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