Government standards for a security wipe is a rewrite done 7 times.
Many manufacturers have a Low-Level Format utility that can be used.
However, some intelligent drives actually block a LLF, but FALSELY
report as completed!
Dismantling a drive only requires a reassemble to regain access to
any recoverable data.
The hammer or shotgun technique does not destroy data. So, any
chunks large enough can be used to recover partial files.
Since, data platters are made of metallic alloys like aluminum, they
are highly susceptible to irrecoverable damage by acids. Drill
multiple holes in the drive case, and drop in a bucket of vinegar,
and forget. BTW, no smoking. This method generates lots of hydrogen
gas which s highly explosive. Best to use in area with lots of
On 5/11/2012 9:32 AM, Darth Borehd wrote:
We need a fast way to securely wipe hard drives.
Is there really any way to recover data after doing 1 pass writing
zeros to every sector? (This is what we are doing now using the
free version of Active Killbits, but it takes over an hour per
If we repartition and reformat Windows NTFS drives as Ext3, is
there any way to recover data from them? (We found this method is
faster, but are not sure if it is as secure as the above.)
The company will not pay for a degausser.
Safety requirements prevent us from doing physical destruction of
the "sledge-o-matic" variety.
We use a computer recycler, but do not trust them 100% to destroy
our data. We know for a fact that equipment they get from us sit
unguarded in a warehouse for months before destruction.