Should be deleted, "Installation of older Knoppix to HDD" is a better mirror page
From Knoppix Documentation Wiki
Run Knoppix OS as a different user (not root)
Run Root Console
adduser - create new user . .
Modify "/etc/init.d/*xsession" file. Find "USER=root" and change it to "USER=%UserName%" (aproximately 5th line), where %UserName% is the user name of created user.
Run "visudo" to modify "/etc/sudoers". There you have to find and change "knoppix" to "%UserName%", where %UserName% is the user name of created user.
This change will allow you to run Root Console.
Reboot Knoppix.