Dear Rock,

IT WORKS! Thanks a lot!

For those who may run into the same trouble, here the problem again:

You may have a machine with less memory than recommended to run Knoppix in graphics mode (less than 96 MB). You may find that everything works fine, despite the fact that you have, say, only 64 MB of memory; i.e. Knoppix boots and runs without any trouble, and it does so in graphics mode. And now you may want to install Knoppix on your harddisk, but knx-hdinstall hangs. This happens because the install-script needs at least 96 MB of memory or so, perhaps even more. In this case just do this:

When booting from CD-ROM enter into your boot screen this:

knoppix 2 vga=normal

Your machine will boot into non-graphics mode. When the prompt is shown on your screen just enter the normal command to run the knx-hdinstall-script, usually:

sudo /usr/local/bin/knx-hdinstall

The script will start and lead you through the download of Knoppix onto your harddisk.