Using Dban

[Stephen Partington]

Todd thanks. I am filing this away for my own use later.

On Sun, Dec 14, 2014 at 11:26 AM, Todd Millecam <tyggna at gmail.com> wrote:
>
> Oh, if it's SSD drives, don't do it this way, this is solely for plattered
> drives.  If you are using an SSD, then you just need to issue a secure
> command to the drive and tell it to wipe itself--which you can do through
> hdparm:
>
> $~ hdparm --user-master u --security-set-pass PasSWorD /dev/sda  #sets up security on the drive
>
> $~ hdparm --user-master u --security-erase PasSWorD /dev/sda # the point of no return delete everything on your SSD drive command
>
>
>
> On Sun, Dec 14, 2014 at 11:00 AM, Todd Millecam <tyggna at gmail.com> wrote:
>>
>> There's a lot of ways to do it, but they all do the same thing.
>> In bash:
>> $~ shred -zn10 /dev/sda
>>
>> That'll securely erase everything on block device /dev/sda--give it a
>> while to run as it's writing random numbers across the entire drive and
>> then finishing by writing nothing but 0s on it.  This makes all data on the
>> device non-recoverable.
>>
>> You need to overwrite the data anywhere from 4 - 15 times before it's
>> clean and nothing can be recovered from it.
>>
>> That's essentially all dban/wipe is doing.  If you want to get even more
>> primitive, then you can use dd (garunteed to be on all *nix systems)
>> $~  dd if=/dev/random of=/dev/sda && dd if=/dev/zero of=/dev/sda
>>
>> That's the same as doing one pass, but if shred is there (and it usually
>> is) then it'll do all 10 passes for you.  I guess you could just throw that
>> dd command in a simple loop:
>> $~  for i in `seq 10` ; do dd if=/dev/random of=/dev/sda && dd
>> if=/dev/zero of=/dev/sda ; done
>>
>>
>> Dban or wipe will do all this for you, but you can do it yourself.
>> (Note, don't do it on the currently-running OS drive, because it'll
>> eventually erase glibc.so being used to do the overwrite.  If you want to
>> do it on multiple drives, just plug them all into the same computer, and
>> run shred on all of them from a live-cd of your chosing)
>>
>>
>>
>> On Sun, Dec 14, 2014 at 10:27 AM, Stephen M <smelheim85 at gmail.com> wrote:
>>
>>> HI,
>>>
>>> I have a couple drives that I want to wipe and give them to the Loco
>>> group.  I have never done a wipe on my own computer.  I want to see whats
>>> the best method.  I know there is dban, wipe, and many other solutions.  I
>>> will be using a SATA to USB adapter so I don't have to open my computers
>>>
>>> What I need to know is there a way to use that device and still work on
>>> my computer.  Or do I have to let my computer run dban or whatever to wipe
>>> the drive.
>>>
>>> Thanks all.
>>>
>>> --
>>> Stephen Melheim
>>> 602-400-7707
>>> SMelheim85 at gmail.com
>>>
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>>
>>
>> --
>> Todd Millecam
>>
>
>
> --
> Todd Millecam
>
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-- 
A mouse trap, placed on top of your alarm clock, will prevent you from
rolling over and going back to sleep after you hit the snooze button.

Stephen
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