When I try to use Knoppix on my computer, it says, "Can't find KNOPPIX file system, sorry, dropping you to a (very limiteed) shell. Additional built in commands available
car mount umount insmod immod kmod"

So the Knoppix live CD doesn't work, so do I have to redownload the iso, or am I doing something wrong? The only thing I change during bootuip is I change it to framebuffer 800x600 because my monitor only suppports 800x600 resolution, but it's not a laptop.