Jordi Espasa Clofent wrote:
...
$ dd if=/deb/zero of=<disk_to_delete>
?Do you think is it safe enough? I mean ?is it enough against the common
recovery low-level data tools?
Do just this, and no software-based recovery tool will ever see all your
data again. You might get some pay-dirt if you can release the locked
out bad blocks...and there are some...and y contain data that is useful
in small chunks (and yes, some data is).
If you think about the claims of data recovery from zeroed disks, they
basically imply there is astronomical storage capacity in drives that is
not tapped...and I do not believe the manufacturers have been holding
out on us. It may be possible to get hints of data, but with massive
error rates and gaps.
If you are worried about recovering data after a single pass of writing
zeros to the entire disk, you need to grind up or melt down the disk.
If you are convinced there is (or will be) mysterious technology that
can recover zeroed disks and your data is that interesting to these
people, you don't know the abilities of it, so don't assume process X
will keep your data deleted and never recovered.
Nick.
