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Date:      Thu, 30 Dec 2010 08:22:57 +1100
From:      Peter Jeremy <peterjeremy@acm.org>
To:        Michael BlackHeart <amdmiek@gmail.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: root mount error
Message-ID:  <20101229212257.GA34530@server.vk2pj.dyndns.org>
In-Reply-To: <AANLkTi=vUBTvq9WGLbt2k1=A76aW3%2B3aMRBFreE5LAs1@mail.gmail.com>
References:  <AANLkTimVFxVoQ9cFXL2e-=hTKYvBmFKS6DXmxagKq7Mc@mail.gmail.com> <AANLkTi=vUBTvq9WGLbt2k1=A76aW3%2B3aMRBFreE5LAs1@mail.gmail.com>

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On 2010-Dec-28 23:08:44 +0300, Michael BlackHeart <amdmiek@gmail.com> wrote:
>I'm jsut trying to say than recent changes in kernel or kernel-modules
>broke up my HDD support and I'd like to notice developres to check
>where the problem is.

It doesn't work that way.  The developers don't have a problem or it
would have been fixed.  You are going to need to provide more details
and do some investigations yourself to help identify the problem.

>Loader on it's own stage easily detects HDD and root partition so I
>can just select old kernel and boot up, but I'm not shure how he gain
>access to HDD to mfke any conclusion, probably through BIOS interrupts
>but it's out of piont.

Yes.  Until the kernel starts, all I/O is via BIOS.

>And for my pity I don't know how to dump demsg without having any
>serial connection or usable disk drive, maybe to flash drive, but I
>don't know how. And anyway there's no real kernel painc, it just asks
>for root mountpoint.

Best suggestion I can offer is to take photographs of the boot
messages (you can use scroll-lock to let you scroll back) and post
them somewhere.

>If you need any aditional info I'll give it all, just ask.

What is the SVN revision of a kernel that works?
What is the SVN revision of a kernel that fails?
Can you please post a verbose dmesg of a successful boot.
Can you please post a dmesg of an unsuccessful boot (see above).

--=20
Peter Jeremy

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