I have some old (P 166 give or take a bit) computers that I'd like to install Linux on but first I really need to be sure the hard drives are as clean as they can be. The plan is to use Darik's Boot and Nuke and then reboot the computers off a CD and install Linux that way. I would be using Puppy Linux because in my Live CD tests it seems as if these old computers can run it okay. Is there anything I should know before I try this? Or... Would simply installing Puppy Linux wipe out the old data anyway? It is very important that it can't be recovered.