[Cialug] Wiping server hard drives

[Barry Von Ahsen]

what he said :)

if you don't have some regulation/compliance standard to adhere to, 
shred/dd should be sufficient.  if you do have a standard, do whatever 
it says :)

-barry



On 10/19/2011 5:06 PM, Josh More wrote:
> Oh.
>
> On modern hardware, you don't actually need shred for a secure delete.
>
> http://www.anti-forensics.com/disk-wiping-one-pass-is-enough
> http://www.anti-forensics.com/disk-wiping-one-pass-is-enough-part-2-this-time-with-screenshots
>
> So look at dd + /dev/zero.  Should be faster.
>
> -Josh
>
> On Wed, Oct 19, 2011 at 5:04 PM, Hasler, Chris<
> ChrisHasler at alliantenergy.com>  wrote:
>
>> I should have mentioned in my first post that I have used DBAN in the past,
>> but now I'm looking for other suggestions since it hasn't been recognizing
>> the controllers in any of the servers I've had to wipe now.
>>
>> As mentioned I've been experimenting with shred.  I've been booted to the
>> CentOS-6.0-x86_64-minimal.iso and selected the option for Rescue.  I don't
>> enable networking or scan for the existing file system just jump into the
>> shell.  Run a fdisk -l to see what disks are configured, /dev/sda for
>> example, then run shred -vfz -n 3 /dev/sda.  This seems to do the same as
>> the dd if=/dev/urandom of=/dev/sda bs=1G command but will run three
>> iterations, well four actually since the -z option does a final overwrite
>> with zeros at the end.
>>
>> Chris H.
>>
>> _______________________________________________
>> Cialug mailing list
>> Cialug at cialug.org
>> http://cialug.org/mailman/listinfo/cialug
>>
>
>
>
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug