On 19/07/2012 09:15, Wojciech Puchar wrote:
no. for modern hard drives it was already proved that
dd if=/dev/zero of=/dev/disk bs=1m
is enough to make data unreadable.
for very old drives it may not
How about data stored in remapped sectors, or any flash cache?
The Secure Erase command
(https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase) may clear all
that data too, but without any guarantees it's better to destroy the
disk than risk leaving classified data on it.
--
Bruce Cran
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