Available: http://csrc.nist.gov/publications/nistp ... errata.pdfUS National Institute of Standards and Technology (NIST) wrote:For ATA disk drives manufactured after 2001 (over 15 GB) clearing by overwriting the media once is adequate to protect the media from both keyboard and laboratory attack.
Available: http://cmrr.ucsd.edu/people/Hughes/docu ... 08_000.docCenter for Magnetic Recording Research, U. of California, San Diego wrote:...the multiple overwrite approach is not very much more effective than a single overwrite
To paraphrase Daniel Moynihan, folks are certainly entitled to their own opinions, but not their own facts.