Yes you would. Each time you boot your system, you'd have to load the contents of the CD into RAM from the HD. The way that knoppix works now, we load just the necessary parts of the CD into RAM using the CDROM. Maybe we only load 100MB worth of stuff, but using the CDROM to do it is slow. If we load the full 700MB of the CD into RAM using the HD, we will be loading more data, but HD access times are much faster than CD access times. Once your OS is fully loaded into RAM, launching any program would be lightning fast! Obviously, this approach is not meant for people that reboot their machines 10 times a day -- but if you boot once in the morning, or if you boot your machine and keep it up for several days, I think the benefit of the lightning fast program response times would outweigh the longer boot up.