savecore? reboot after panic?

scary. I updated freebsd, and i can only think that i messed it up when i tried to "shutdown -h" to get it shutdown so i could reboot. anyways, when i rebooted, i saw this message. apparently there was a kernel dump on my swap drive. But problem is that i didn't have enough room on /var/crash to make it happen. i redirected the commands ot the /usr/home/ program.

http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html

fsck -p
mount -a -t ufs
make sure /var/crash is writable
savecore /var/crash /dev/ad0b
exit
exit to multi-user