Whan can I do if OS does not boot after makeworld

[Micheas Herman]

On Tue, 2004-01-13 at 07:55, Scott Mitchell wrote:
> owner-freebsd-questions at 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.

        This is the place that I have been bitten.  In 5.x (I don't know
        about 4.x off the top of my head) you have to type "shutdown -r
        now" and NOT "shutdown now" The later keeps using your old
        kernel which is what you are trying not to do. It was an new
        system in a huge mess so I just reinstalled instead of trying to
        fix the problems.
        
        
        Micheas

> 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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-- 
Micheas Herman              email: micheas at freep.org
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