On Mon, Aug 4, 2014 at 3:53 PM, Andrew McGlashan <[email protected]> wrote: > [...] > If you do the /dev/zero against a volume, then no useful data will > remain on that volume ... you need to backup that file system first, > then restore it after you re-create the file system again.
Well, that depends on a number of things. In the worst case scenario, electron microscopes have a much easier time recovering data overwritten with zeros than data overwritten with random stuff. Also, I understand that there are some very intelligent controllers that compress zeroed blocks and other such helpful things. -- Joel Rees Be careful where you see conspiracy. Look first in your own heart. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: https://lists.debian.org/CAAr43iNAR-gmS=k8vY4a9=H5ko2sWtEtMpzAx=avpmeg5ch...@mail.gmail.com
