kernel panic at boot on any 6.x OS

Joe Auty joe at
Mon Feb 26 06:40:10 UTC 2007

Hash: SHA1

On Feb 25, 2007, at 7:56 PM, Ted Mittelstaedt wrote:

> ----- Original Message -----
> From: "Joe Auty" <joe at>
> To: "Daan Vreeken [PA4DAN]" <Danovitsch at>
> Cc: "Kip Macy" <kip.macy at>; <freebsd-questions at>;
> <freebsd-hackers at>
> Sent: Sunday, February 25, 2007 8:14 AM
> Subject: Re: kernel panic at boot on any 6.x OS
>> Any idea how this could have happened after disabling everything in
>> my /etc/loader.conf, and simply running a:
>> make buildworld
>> make buildkernel KERNCONF=myconfig
>> make installkernel KERNCONF=myconfig
> well your supposed to do this single-user, run mergemaster and a  
> few other
> things.
> I also don't see a make installworld.

I usually perform those steps after I've rebooted to ensure that my  
system will boot off the new kernel, as per the instructions in the  
FreeBSD handbook.

> Joe, please try booting from a 6.2-release install ISO.  If it  
> works without
> panicing,
> then you did something wrong during the upgrade.

Downloading the image now, I'll let you know if I'm able to boot from  

> Since by your own admission your not an expert, you would be well  
> advised
> to simply back up your files the old fashioned way, reformat your  
> hard disk,
> install from a 6.2 boot ISO, then restore your files.  Leave the fancy
> in-place
> updating to someone else.  It's a big PIA and doesen't work half  
> the time
> anyway.

How well does simply upgrading with the CD work (as opposed to wiping  
clean)? I've upgraded several times to new releases simply by  
rebuilding world, it has never failed me in the past. I don't doubt  
what you are saying here, but since I will have to change how I work,  
assuming that I can boot off of the 6.2 CD, I'd appreciate any  
general upgrade tips that don't involve wiping the disk clean (which  
is not really an option).

For instance, is rebuilding world between point releases (e.g. 5.4 to  
5.5) an okay idea, compared to across major releases (e.g. 5.5 to 6.2)?

I'll do my own homework regarding this too, but I appreciate any  
nuggets of wisdom you might have! As far as me being an expert, I  
guess I'd categorize me somewhere in between complete newb and  
FreeBSD developer =)

Thanks again!

- -----------
Joe Auty
NetMusician: web publishing software for musicians
joe at

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