How do I avoid entering cheat codes every time I use Knoppix USB live?

[jaques1]

Why do you think, Knoppix will take care of '/home/knoppix/Desktop/KNOPPIX/boot/syslinux/syslinux.cfg'?

Use '/mnt-system/boot/syslinux/syslinux,cfg'! Of course, you can do your locale settings throughout all the APPEND lines.

I checked out where syslinux.cfg was located using the file system gui and then used the same path in a terminal. However, I'll use your preferred path in future.