agencies recover overwritten data?" at
http://www.nber.org/sys-admin/overwritten-data-gutmann.html
at first - it should be asked "can agencies recover your data without
being overwritten" first.
just use geli(8)
then second problem is even less problem.
Finally use geli (or similar method) ALWAYS, no matter if you have highly
important data, naked girls photos or just games. Just to say NO to
any government agencies that terrorize you using your own money.
At least in Poland you are not required by law to provide any passwords.
Encryption is legal.
At second - the basic claim that overwriting 1 with 1 differs from
overwriting 0 with 1 at magnetization level is quite a proof of lack of
understanding physics. Hint: magnetic hysteresis. What hard drive
manufacturers want is to use magnetic material with largest hysteresis so
difference between one and zero is highest.
Can all paranoid here finally put their hard drives to fire so they will
heat over curie point, and then - end that offtopic?
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