On Thursday 17 Jul 2003 17:08, Lee wrote: > boot a floppy.... > then do > > dd if=/dev/zero of=/dev/hda Add a bs=256k, but just writing zero's won't prevent the data being recovarable (with the right equipment). Using badblock's is better, and some put in a pass, using /dev/urandom to scramble the contents before the predictable writes are made. Rob