I was installing a Sense unit into my breaker panel and was repeatedly breaking the master power (yes, I probably should have unplugged sensitive equipment). It turned out that the file system on my new SG-2220 pfSense appliance from NetGate wasn’t a huge fan and the system would enter a kernel panic upon boot.
I grabbed a USB cable with a mini-b plug and used puTTY, 115200 baud, 8-N-1, as directed in the user manual, then performed the following steps to backup the config (which includes the certificates!), and then fix the file system:
#https://www.netgate.com/docs/sg-2220/connect-to-console.html #at pfsense boot time, boot into single user mode #plug in a usb stick #https://forums.freebsd.org/threads/4501/ mount -t msdosfs -o large /dev/ad6s1 /mnt #https://turbofuture.com/computers/How-to-Backup-and-Restore-Configurations-in-pfSense #http://hints.macworld.com/article.php?story=20100212171620210 #https://forum.pfsense.org/index.php?topic=40696.0 cp -npRv "/cf/conf" "/mnt/cf_conf/" # unmount usb cd umount /mnt #https://www.cyberciti.biz/faq/howto-freebsd-remount-partition/ #https://redmine.pfsense.org/issues/5592 fsck / #select y for all the things fsck / #select y for all the things fsck / #select y for all the things fsck / #select y for all the things mount -o rw / #https://doc.pfsense.org/index.php/Forcing_a_Filesystem_Check touch /root/force_fsck reboot