freebsd 6.4 can't load kernel after upgrade

[Alex de Kruijff]

On Sat, Oct 31, 2009 at 07:04:55AM +0200, Manolis Kiagias wrote:
> oscar Seo wrote:
> > I'm a beginner in freebsd.
> > my machine consists of freebsd-6.4 + i386 bootstrap loader,+ windowmaker
> > after upgrade freebsd-6.4 using sysinstall then reboot the system,
> > I got an error message as follows
> > +++++++++++++++++++++++++++++++++++++++
> > Loading /boot/defaults/loader.conf
> > Unable to load a kernel!
> > /
> > can't load 'kernel'
> >
> > Type '?' for a list of commands, 'help' for more detailed help.
> > OK _
> > +++++++++++++++++++++++++++++++++++++++
> >   
> You could try loading your old kernel. When you build a new kernel, your
> old kernel is preserved under /boot/kernel.old
> 
> Type these commands in the loader prompt
> 
> unload (probably not needed here)
> load kernel.old
> boot

Because kernel.old is overwritten with each attemt you might mv
/boot/kernel.old to /boot/kernel.good. This prevents you from being
stuck with a system you can't boot.
-- 
Alex