Knoppix boot from different partitions

[kl522]

Is there any way to disable this, to force Knoppix to boot from a particular partition, or from a particular KNOPPIX/ directory, when there are multiple versions lying around?

You can try to use the knoppix cheatcode knoppix_dir=KNOPPIX.

Basically you copy the knoppix files to different directories, and then you specify the knoppix_dir=KNOPPIX inside your menu.lst entries.