On Mon, Jan 06, 2020 at 02:03:39AM -0700, ghe wrote:
Or if you want a multi-pass DoD wipe, try DBAN:
https://sourceforge.net/projects/dban/
There is no current guidance that anything more than a single pass of
zeros is necessary or beneficial when wiping a magnetic disk. There are
reasons that just zeroing a drive may not be sufficient (mainly having
to do with logically-inaccessible areas of the disk) but mutiple writes
don't help with that. The idea that securely wiping a disk requires
multiple passes stems with special patterns stems from misundertandings
of work done decades ago on disk drives of a similar age.
