I've noticed that if I use a persistent image file and for some reason it gets corrupted (powering off abnormally) that I'll get a bunch of filesystem errors in dmesg. I can fix it by booting with the "noimage" cheat code, like "knoppix64 2 noimage" and then run "fsck.ext2 /mnt-system/KNOPPIX/knoppix-data.img" and then "sudo reboot".
It'd be really nice if there were an automatic check of the ext2 image when knoppix boots. It would also let you know if errors have crept into your filesystem since knoppix still works but you see weird messages like "unable to write /etc/fstab".
NetFu Firewall 1U, Intel CPU, 8 x Gigabit, SFP, w/ pfSense, Others, NEW OPTIONS
$553.95
NEW NetFu Firewall Mini, Intel CPU, 6 Port Gigabit, w/ pfSense, others
$373.60
Cisco ASA5525-FTD-K9 Security Appliance with FirePower Services
$1000.00
Fortinet Fortigate FG-61E | Firewall Network Security Appliance
$49.99
Fortinet FortiGate 60C FG-60C Router Firewall Security Appliance - UNTESTED
$18.99
OPNsense six-port Gigabit router/firewall on Lanner FW-7535 hardware
$69.00
Fortinet Fortigate 70D Firewall Adapter Network Security Appliance
$52.00
Fortinet FortiGate FG-40F Network Security Firewall
$100.00
Fortinet Fortiwifi 60D FG-60D Security Appliance Firewall / VPN w/ AC Adapter
$999.97
Sophos XG 230 rev 1 Firewall Security Appliance with AC Adapter
$134.99