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Date:      Mon, 1 Mar 2004 05:16:36 -0800
From:      Kris Kennaway <kris@obsecurity.org>
To:        Anton Karpov <Toxa@cterra.ru>
Cc:        freebsd-current@freebsd.org
Subject:   Re: can't boot new kernel
Message-ID:  <20040301131636.GA52938@xor.obsecurity.org>
In-Reply-To: <000701c3ff09$b5a20a70$0202a8c0@karputer>
References:  <000701c3ff09$b5a20a70$0202a8c0@karputer>

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On Mon, Mar 01, 2004 at 12:19:24AM +0300, Anton Karpov wrote:
> This is a common question, maybe not suitable for this maillist, but I would
> like to hear any ideas how to work it out.
> Let suppose I build new world and kernel, reboot my current box, and new
> kernel fails to boot (actually it hangs while detecting ata). So I should to
> go into load prompt  and type 'boot /boot/kernel.bak/kernel', whouldn't I?
> Ok, I try to boot and old kernel but now it fails too (maybe because of new
> world?). So now I'm without any working kernel. The only way I see to solve
> this trouble is to compile a sutable kernel on another machine, boot with
> installation/recovery cd, escape to recovery shell, mount root partition and
> replace /boot/kernel/ with another one? Or does load prompt can offer me any
> builtin feature to avoid using recovery live cd (cuz i haven't neither such
> cd, nor another bsd box actually :)

You need to get a working kernel onto that machine somehow.  This is
the same question as "What are the different ways of booting a FreeBSD
kernel?".  There are lots of possibilities, including floopies, CDs,
tftp booting, NFS booting, PXE booting, and probably others I have
forgotten.  See the handbook for more information.

Kris

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