Okay, I did it. I kept looking through files in /boot, in both the part that boots the CD, and the part that is copied onto the HD install--and I cleaned it up considerably. And it even made the CD boot faster, as the first remaster without the 2.6 kernel took a longer time to actually load the kernel and boot (but didn't have any trouble doing so, unlike the installed copy).

What I think actually did it was deleting the remaining 2.6 kernel modules that hadn't gone. There was a /lib/modules/2.6.x directory that hadn't gone completely away when I uninstalled everything else, which is what I think the installer was seeing.

Now, if I could only get the system to set up the Knoppix user from /etc/skel, or the installer to set up the initial user from /etc/skel instead of /home/knoppix--I'd have everything I want.

(Well, almost. I'd kind of like to install Webmin, but I think it's too big for the space I have created. And I'd like wine to work for the Knoppix user on the CD, but doing so requires stuff from /etc/skel--I can copy it manually, but that makes for a poor demo. But telling someone to delete the user they create on install, or ignore it, and create another on on bootup is certainly better than having to tell them to chroot into the install and run lilo--after manually editing /etc/lilo.conf. And I should be able to replace the solitaire on the Cd with Kpat, which is a lot more like what they would be used to.)