On Tue, Feb 25, 2003 at 09:22:42AM +0000, Bruce M Simpson wrote:
> On Mon, Feb 24, 2003 at 11:58:36PM -0800, Mark Laws wrote:
> > During the boot sequence, /boot/loader panics with something about
> > "guard1" and reboots. The system in question is a Pentium running
> > 4.7-STABLE from February 12, 2003; however, this problem has been
> > occurring for at _least_ six months now. I have tried installing new boot
> > code into the slice using disklabel as well as updating the MBR. Do any
> > of you know what may be causing this and/or how to fix it? Any help
> > would be appreciated.
> >
> > I am unable to provide the text that appears around the time that it
> > panics; it reboots too fast. Is there is a way to get it to pause before
> > it reboots or wait for a keypress or something?
>
> If it's managing to execute the loader, then the problem lies there; both
> the root slice boot blocks and the MBR are executed before the loader.
>
> Try booting from fixit media, mount up your root disk, create a file
> /boot/loader.conf.local in vi and put:
>
> console="comconsole"
>
> Then attach a null modem cable to COM1 on the affected machine, and connect
> to this from another machine using your favorite terminal program at
> 9600 8-N-1.
>
> This should allow you to capture the messages which the loader generates,
> providing there isn't something wrong at a lower level.
>
> BMS
OK, here's what I get:
***
Console: serial port
BIOS drive A: is disk4
BIOS drive C: is disk5
BIOS 640kB/130048kB available memory
FreeBSD/i386 bootstrap loader, Revision 0.8
([EMAIL PROTECTED], Thu Feb 13 22:44:59 PST 2003)
Can't work out which disk we are booting from.
Guessed BIOS device 0xffffffff not found by probes, defaulting to disk0:
panic: free: guard1 fail @ 0x375b4
***
--
Mark Laws [EMAIL PROTECTED]
http://www.60hz.org
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