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Date:      Tue, 13 Jan 2004 15:55:57 -0000
From:      "Scott Mitchell" <scott@fishballoon.org>
To:        "'Vahric MUHTARYAN'" <vahric@doruk.net.tr>, "'Andrew L. Gould'" <algould@datawok.com>
Cc:        freebsd-questions@freebsd.org
Subject:   RE: Whan can I do if OS does not boot after makeworld
Message-ID:  <E1AgQtq-0002RY-6t@llama.fishballoon.org>
In-Reply-To: <auto-000071820572@doruk.net.tr>

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owner-freebsd-questions@freebsd.org wrote:
> Did you ever have any problem about makeworld process ?!
> I afraid of one day will come and I can't boot my FreeBSD
> 
> Vahric

This is why the recommended update process is (in part):

# make buildworld
# make buildkernel
# make installkernel

Followed by a reboot into single-user mode before doing the installworld.
If the new kernel doesn't boot, you've still got the previous one in
/kernel.old, so you can just boot from that one and carry on without having
trashed any part of your system.

If installworld somehow manages to make your system unbootable, you have a
few options:
- boot single-user and try to fix things with the tools in /stand (or
/rescue on 5.x)
- boot CD #2 and try to fix things with the tools in the live filesystem
- restore from backups (you do have backups, right?)

Personally, I've made plenty of unbootable kernels, and a few worlds that
behaved strangely in places, but never an unusable system (fingers crossed
:-)

	Scott



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