L wrote:
Unix Fan wrote:
But either way, no such utility exists to restore data that has been
overwritten.. regardless of the "algorithms" used.
Unless there was a magnetic offline hardware utility of some sort that
scanned magnetic fields?
http://www.actionfront.com/ts_dataremoval.aspx
"It has been suggested that an electron microscope could be used to read
and interpret any patterns that were not fully *overwritten* by the
process." ....*
<snip>*
"Electron microscopes have been used to detect and identify *magnetic*
regions smaller than the fluxes used to represent data on a 200 megabyte
*disk* *drive*. Unfortunately, at best, this type of process could be
accomplished at a rate of perhaps 1 bit per second. Furthermore, since
virtually every *drive* in production today records two or more
*magnetic* fluxes (due to R.L.L. recording) to represent each bit the
actual rate could be considerably slower."
