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Re: cancellazione spazio libero

On 6/6/05, Andrea Gasparini <gaspa@yattaweb.it> wrote:
> ( di cui non so bene la risposta, un tool c'era ma non mi ricordo... prova
> "secure delete" con google, o qualcosa di simile... )


Secure file deletion

Recovery of supposedly erased data from magnetic media is easier than
what many people would like to believe. A technique called Magnetic
Force Microscopy (MFM) allows any moderately funded opponent to
recover the last two or three layers of data written to disk. Wipe
repeatedly writes special patterns to the files to be destroyed, using
the fsync() call and/or the O_SYNC bit to force disk access.

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