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".
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
Samsung 16GB 2Rx4 PC4-2133P DDR4-17000 1.2V RDIMM ECC Registered Server Memory
$16.29
Samsung 16GB (2x8GB) DDR4 2400MHz PC4-19200 Desktop RAM Memory M378A1K43CB2-CRC
$19.95
HyperX FURY DDR3 8GB 16GB 32GB 1600 MHz PC3-12800 Desktop RAM Memory DIMM 240pin
$12.90
Corsair Vengeance LPX 32GB PC4-25600 (DDR4-3200) Memory NEVER USED LOOSE STICKS
$40.00
A-Tech 8GB PC3-12800 Desktop DDR3 1600 MHz Non ECC 240-Pin DIMM Memory RAM 1x 8G
$13.99
Kingston HyperX FURY DDR3 8GB 16GB 32G 1600 1866 1333 Desktop Memory RAM DIMM
$13.25
TeamGroup 16GB PC4 2666 PC4 21300 DDR4 2666MHz 1.2V CL19 Desktop RAM Memory
$27.95
Micron (4X16GB) 64GB 2RX4 PC4-2133P-RB0-10 Registered ECC Memory #73
$54.99
A-Tech 256GB 4x 64GB 4Rx4 PC4-19200 ECC Load Reduced LRDIMM Server Memory RAM
$287.96