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From: �� on 29 Mar 2010 00:38
Hi, I'd like to use file shredder to overwrite the primary partition C:, but
it failed for the partition is in use. What can I do? Can I install another
system on another parition such as E or F, and then boot from E or F
partition, so that I can overwrite the ex-primary partition using file
shredder?

Please help me. thanks.


From: Stefan Patric on 29 Mar 2010 01:51
On Mon, 29 Mar 2010 12:38:57 +0800, Àî wrote:

> Hi, I'd like to use file shredder to overwrite the primary partition C:,
> but it failed for the partition is in use. What can I do? Can I install
> another system on another parition such as E or F, and then boot from E
> or F partition, so that I can overwrite the ex-primary partition using
> file shredder?

No need to install another system. Just download, install to a floppy,
USB flash drive or CD Dban, Darik's Boot and Nuke utility, and boot the
system with it.

http://www.dban.org/

Dban does a better job at destroying data on a partition or an entire
hard drive than typical file shredders.

Stef


From: �� on 29 Mar 2010 03:01
Thanks,

But it seems that DBAN can not wipe the disk using 35 passes as file
shredder does. How many passes can DBAN erase?

"Stefan Patric" <not(a)this.address.com> д����Ϣ����:EdXrn.50169$sx5.16334(a)newsfe16.iad...
> On Mon, 29 Mar 2010 12:38:57 +0800, ��? wrote:
>
>> Hi, I'd like to use file shredder to overwrite the primary partition C:,
>> but it failed for the partition is in use. What can I do? Can I install
>> another system on another parition such as E or F, and then boot from E
>> or F partition, so that I can overwrite the ex-primary partition using
>> file shredder?
>
> No need to install another system. Just download, install to a floppy,
> USB flash drive or CD Dban, Darik's Boot and Nuke utility, and boot the
> system with it.
>
> http://www.dban.org/
>
> Dban does a better job at destroying data on a partition or an entire
> hard drive than typical file shredders.
>
> Stef
>
>


From: sgopus on 29 Mar 2010 17:46
You can't wipe your primary partition while windows is active, and why would
you want to? if you wanted to wipe windows out just boot to the install disk
and format the partition, I question if this is what you really want to do?

"Àî" wrote:

> Thanks,
>
> But it seems that DBAN can not wipe the disk using 35 passes as file
> shredder does. How many passes can DBAN erase?
>
> "Stefan Patric" <not(a)this.address.com> дÈëÏûÏ¢ÐÂÎÅ:EdXrn.50169$sx5.16334(a)newsfe16.iad...
> > On Mon, 29 Mar 2010 12:38:57 +0800, ¨¤? wrote:
> >
> >> Hi, I'd like to use file shredder to overwrite the primary partition C:,
> >> but it failed for the partition is in use. What can I do? Can I install
> >> another system on another parition such as E or F, and then boot from E
> >> or F partition, so that I can overwrite the ex-primary partition using
> >> file shredder?
> >
> > No need to install another system. Just download, install to a floppy,
> > USB flash drive or CD Dban, Darik's Boot and Nuke utility, and boot the
> > system with it.
> >
> > http://www.dban.org/
> >
> > Dban does a better job at destroying data on a partition or an entire
> > hard drive than typical file shredders.
> >
> > Stef
> >
> >
>
>
> .
>
From: Lem on 29 Mar 2010 19:53
�� wrote:
> Thanks,
>
> But it seems that DBAN can not wipe the disk using 35 passes as file
> shredder does. How many passes can DBAN erase?
>
> "Stefan Patric" <not(a)this.address.com> д����Ϣ����:EdXrn.50169$sx5.16334(a)newsfe16.iad...
>> On Mon, 29 Mar 2010 12:38:57 +0800, ��? wrote:
>>
>>> Hi, I'd like to use file shredder to overwrite the primary partition C:,
>>> but it failed for the partition is in use. What can I do? Can I install
>>> another system on another parition such as E or F, and then boot from E
>>> or F partition, so that I can overwrite the ex-primary partition using
>>> file shredder?
>> No need to install another system. Just download, install to a floppy,
>> USB flash drive or CD Dban, Darik's Boot and Nuke utility, and boot the
>> system with it.
>>
>> http://www.dban.org/
>>
>> Dban does a better job at destroying data on a partition or an entire
>> hard drive than typical file shredders.
>>
>> Stef
>>
>>
>
>

So what? See this DBAN FAQ:

Is the Gutmann method the best method?

No.

Most of the passes in the Gutmann wipe are designed to flip the bits in
MFM/RLL encoded disks, which is an encoding that modern hard disks do
not use.

In a followup to his paper, Gutmann said that it is unnecessary to run
those passes because you cannot be reasonably certain about how a modern
hard disk stores data on the platter. If the encoding is unknown, then
writing random patterns is your best strategy.

In particular, Gutmann says that "in the time since this paper was
published, some people have treated the 35-pass overwrite technique
described in it more as a kind of voodoo incantation to banish evil
spirits than the result of a technical analysis of drive encoding
techniques. As a result, they advocate applying the voodoo to PRML and
EPRML drives even though it will have no more effect than a simple
scrubbing with random data... For any modern PRML/EPRML drive, a few
passes of random scrubbing is the best you can do".

Read these papers by Peter Gutmann:

* Secure Deletion of Data from Magnetic and Solid-State Memory
* Data Remanence in Semiconductor Devices

Links to Gutmann papers at http://www.dban.org/node/40

--
Lem

Apollo 11 - 40 years ago:
http://www.nasa.gov/mission_pages/apollo/40th/index.html
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