This looks even better! Thanks Erik B-) On Monday 06 December 2004 09:25 am, Erik Ball wrote:
Check out DBAN (free, posted on sourceforge). http://dban.sourceforge.net/
Write the ISO image to a cd, boot it up, and at the boot: enter dod. This will start a 7 pass DoD grade wipe on the drive.
It is sufficient to say that the data will be 100% irrecoverable for all practical intents.
Erik
James Knott wrote:
Jeffrey L. Taylor wrote:
This isn't sufficient for a sufficiently determined and resourceful adversary. E.g. the intelligence services of major countries and corporations.
Magnetic disks are analog, not digital. E.g., setting a bit to 1 then 0 results in a slightly different magnetization levels and spatial patterns than setting it to 0 twice.
However, each time you overwrite, the orginal data gets pushed further down into the noise, making it more difficult to read. Eventually, a point will be reached, when it's impossible to tell the original data, from the noise. There is IIRC, a specified number of overwrites, with different patterns, so that the disk is considered fully erased.