[CentOS] Utility to zero unused blocks on disk

Mon Feb 8 22:22:06 UTC 2016
John R Pierce <pierce at hogranch.com>

On 2/8/2016 2:14 PM, Chris Murphy wrote:
> DBAN is obsolete. NIST 800-88 for some time now says to use secure erase or
> enhanced security erase or crypto erase if supported.
> Other options do not erase data in remapped sectors.

the only truly safe way to destroy data on magnetic media is to grind 
the media up into filings or melt it down in a furnace.

john r pierce, recycling bits in santa cruz