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
$15.49
Samsung 2 x 16GB DDR4 2Rx4 PC4-2133P-R Server Memory ECC Reg RDIMM M393A2G40DB0
$29.99
HyperX FURY DDR3 8GB 16GB 32GB 1600 MHz PC3-12800 Desktop RAM Memory DIMM 240pin
$12.90
A-Tech 8GB PC3-12800 Desktop DDR3 1600 MHz Non ECC 240-Pin DIMM Memory RAM 1x 8G
$13.99
Kingston 32GB Memory Module KCP548SD8-32 DDR5 4800MT/s Non-ECC Unbuffered SODIMM
$70.00
SK Hynix 8GB (2x4GB) 1Rx8 PC3L-12800 DDR3-1600MHz Laptop Memory HMT451S6AFR8A-PB
$8.25
HyperX FURY RAM DDR4 16GB 8GB 32GB 4GB 3200 2666 2400 2133 Desktop Memory DIMM
$9.64
A-Tech 256GB 4x 64GB 4Rx4 PC4-19200 ECC Load Reduced LRDIMM Server Memory RAM
$287.96
A-Tech 256GB 8x 32GB 4Rx4 PC4-17000L DDR4 2133 MHz ECC LRDIMM Server Memory RAM
$319.92