I was wondering how I would boot Knoppix from the DVD ISO using grub. I don't want to do a HD install due to the dangers of it, and I would like everything compressed to the DVD size. I have 3 partitions and 1 extended. An ntfs windows, a ext3 xubuntu, and another ext3 fedora core. On my extended I have my swap and a couple of other partitions used mainly for personal files like /home.

I heard from someone that grub can boot things from an ISO, However people at #grub don't seem to know how to. I saw a knoppix guide here about doing it on a USB key but I am not sure if that would be the same on a harddrive. (I should also note, that even though it is my main harddrive it used /dev/sda for some wierd reason. So I might be able to use that guide.)

I am scared of using that guide because I have a feeling it would make the xubuntu ext3 partition that it is on unbootable.