No, this procedure doesn't work with the DVD version v4 or v5. The structure of the DVD disk places a m23 folder at the root of the DVD, which conflicts with the m23 file within the boot\isolinux folder if you try to move it to the root.

EDIT: I was able to get the Knoppix 402 DVD installed on my 40 gig USB hard drive using a slightly modified version of ruymbeke's fine work quoted above (see original thread here: http://www.knoppix.net/forum/viewtop...?p=93758#93758 ). I formated the drive with fat32 (fat32format.exe to exceed the 32 GB limit) and used a Windows 98 boot floppy that mounted the USB hard drive in DOS, where I used the "SYS.com" command to install the necessary system files. I made the boot floppy from information and drivers I gathered from http://www.bootdisk.com/usb.htm .