Is there a way to install Knoppix (6.7.1) from the live DVD to a multi-boot USB drive (/dev/sdb7)? The "hard drive install" menu option lets me select the correct partition on the USB but will not save it and install to it. It will only try to install to the hard drive (understandable). The "install to a flash drive" menu option won't let me install to a specific partition, as far as I can tell.

Is there another way to install to sdb7 ? Maybe a command string from a terminal or modifying a script?

Thanks