Hmm, are you trying to install sarge or another version of Debian? I'm not sure what the problem is, but this might help. Insert your Debian boot/install CD and restart your PC. When the prompt comes up type "linux26" and hit enter to continue. This will install the 2.6 kernel as opposed to the 2.4 kernel that sarge installs by default (I'm assuming you use sarge of course). Then let it install and see if you get the same error. I hope that helps, but I'm a newbie myself so I don't know if it will.