Date: Fri, 24 Jan 1997 19:24:43 +1100 From: Bruce Evans <bde@zeta.org.au> To: dgy@rtd.com, freebsd-hackers@freefall.freebsd.org Subject: Re: suggestion for kernel printk() ? Message-ID: <199701240824.TAA07251@godzilla.zeta.org.au>
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> I just spent some time fighting a kernel that died miserably >on boot :-( I was inundated with an endless stream of kernel >messages (in highlighted text) followed promptly by a hard reset. >It was quite frustrating to find that there doesn't seem to be a >mechanism to pause the display at this point! I use a serial console and `terminalprogram | tee foo' to capture the output. > OK, reboot from /kernel.old and look through the logs. Hmmm... >nothing here! Probably the filesystem wasn't even functional when >the boot ran into trouble. Boot messages are supposed to be preserved in the message buffer across reboots. However, many PC BIOSes and/or memory systems do something that invalidates the message buffer even for a soft reboot. Bruce
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