-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 03/18/07 00:08, Masatran, R. Deepak wrote: > Why does shred have multiple iterations (25) as the default option? I see no > point in overwriting more than once. Is not > > sudo shred --iterations=1 --verbose /dev/sda > > sufficient?
No. If it were, the default iterations would be 1. (Isn't that logical?) The reason it is insufficient is that magnetic "residue" of the previous data values remain (which can be detected with special equipment) after a track has been overwritten. Many writes are needed for the "residue" of the original data to disappear. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFF/Vv9S9HxQb37XmcRAo1+AJ0VUn6pLAnMEu/kNlMoEahzzgGuygCg7FSN 7rCePsqmiDh189/HyRTJYcU= =iIoQ -----END PGP SIGNATURE----- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
