that is the first measure, other like degaussing are more secure.
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送交者: steven 于 2008-01-07, 17:45:49:
回答: never notice that...usually I just perform the operation of repair 由 mangolasi 于 2008-01-07, 17:42:50:
However, for practical purpose, overwriting with one-time pad xoring the data is good enough.
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