kalinix wrote:
> On Sun, 2010-08-29 at 20:21 +0100, Marko Vojinovic wrote:
>
>
>> So if you want to be on a safe side, fill up the whole disk from /dev/random
>> over and over 20 times, and the original data will be completely gone. Even
>> for NSA & friends. :-)
>>
>> Best, :-)
>> Marko
>>
>>
On 08/29/2010 12:21 PM, Marko Vojinovic wrote:
> On Sunday, August 29, 2010 09:53:48 Michael D. Setzer II wrote:
>>>Marko Vojinovic wrote:
Starting from the premise that every hard disk has in principle limited
capacity to store data, one can always fill it up completely, then
On Sun, 2010-08-29 at 20:21 +0100, Marko Vojinovic wrote:
> So if you want to be on a safe side, fill up the whole disk from /dev/random
> over and over 20 times, and the original data will be completely gone. Even
> for NSA & friends. :-)
>
> Best, :-)
> Marko
>
>
>
Actually, the 'standard
On Sunday, August 29, 2010 09:53:48 Michael D. Setzer II wrote:
> > Marko Vojinovic wrote:
> > > Starting from the premise that every hard disk has in principle limited
> > > capacity to store data, one can always fill it up completely, then
> > > rewrite it completely again. I see no way of the
On Sunday, August 29, 2010 09:16:28 Bruno Wolff III wrote:
> On Sun, Aug 29, 2010 at 07:46:49 +0100,
> Marko Vojinovic wrote:
> > Starting from the premise that every hard disk has in principle limited
> > capacity to store data, one can always fill it up completely, then
> > rewrite it complete
On Sun, Aug 29, 2010 at 1:06 PM, Hiisi wrote:
> 2010/8/29 Alan Cox :
> <--SNIP-->
>>
>> Modern drives support a secure erase/wipe feature (see hdparm). It's
>> probably the best option you get short of doing what probably would have
>> been smartest - encrypting it at install time ;)
>>
> <--SNIP-
2010/8/29 Alan Cox :
<--SNIP-->
>
> Modern drives support a secure erase/wipe feature (see hdparm). It's
> probably the best option you get short of doing what probably would have
> been smartest - encrypting it at install time ;)
>
<--SNIP-->
>
> Alan
I always wondered would drive encryption sign
> In any case, if someone wants your data that bad, it is time to dig out
> the old sledgehammer and physically destroy the disk. Otherwise, scrub
> and other secure erasure programs should be sufficient.
Programs that just write over the data a few times may or may not help
but you never know.
On 29 Aug 2010 at 3:16, Bruno Wolff III wrote:
Date sent: Sun, 29 Aug 2010 03:16:28 -0500
From: Bruno Wolff III
To: Marko Vojinovic
Subject:Re: Scrub free disk blocks
Copies to: users@lists.fedoraproject.org
Send
On Sun, Aug 29, 2010 at 07:46:49 +0100,
Marko Vojinovic wrote:
>
> Starting from the premise that every hard disk has in principle limited
> capacity to store data, one can always fill it up completely, then rewrite it
> completely again. I see no way of the old data being recoverable, becaus
On Sat, Aug 28, 2010 at 17:32:34 -0700,
James McKenzie wrote:
> One thing is that if you expect the police on your doorstop, you are
> screwed anyway. There is NO truly secure method, other than complete
> pulverization, to destroy disk data.
That depends on how good they are. Full disk enc
There is NO truly secure method, other than complete pulverization, to
destroy disk data.
Format the hd with DOS 3.1 or 5 that'll get rid of everything.
And if unsure after that format to ext2.. everything gone.
Roger
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On Sunday, August 29, 2010 01:32:34 James McKenzie wrote:
> One thing is that if you expect the police on your doorstop, you are
> screwed anyway. There is NO truly secure method, other than complete
> pulverization, to destroy disk data.
Whenever I see a statement like this (and this isn't the f
JD wrote:
[trimmed]
>
> Well, that's the point another op has made: If you have
> a failing disk, and you have credit card account data,
> bank account data, tax data, and many other type of
> proprietary product secrets, business plans, meetings records...etc,
> then you should consider destroy
On Sat, 2010-08-28 at 18:01 -0700, JD wrote:
> > However note that neither of these methods guarantees to scrub
> indirect
> > blocks in the filesystem that were used to create the space-filling
> > files. Maybe they do, maybe they don't, it's not clear.
> >
> > poc
>
> It was you who made the off
On 08/28/2010 07:21 PM, James McKenzie wrote:
> JD wrote:
>>On 08/28/2010 06:35 PM, Bill Davidsen wrote:
>>
>>> JD wrote:
>>>
On 08/28/2010 05:42 PM, Patrick O'Callaghan wrote:
> On Sat, 2010-08-28 at 15:12 -0700, JD wrote:
>
>> On 08/28/2010 01:53 PM, Patrick O'Call
JD wrote:
> On 08/28/2010 06:35 PM, Bill Davidsen wrote:
>
>> JD wrote:
>>
>>>On 08/28/2010 05:42 PM, Patrick O'Callaghan wrote:
>>>
On Sat, 2010-08-28 at 15:12 -0700, JD wrote:
> On 08/28/2010 01:53 PM, Patrick O'Callaghan wrote:
>
>>
JD wrote:
> On 08/28/2010 05:32 PM, James McKenzie wrote:
>
>> Steven Stern wrote:
>>
>>> On 08/27/2010 11:25 PM, JD wrote:
>>>
>>>
>>>>Is there a Linux util to scrub free disk blocks and keep everything
>>
On 08/28/2010 06:35 PM, Bill Davidsen wrote:
> JD wrote:
>>On 08/28/2010 05:42 PM, Patrick O'Callaghan wrote:
>>> On Sat, 2010-08-28 at 15:12 -0700, JD wrote:
On 08/28/2010 01:53 PM, Patrick O'Callaghan wrote:
> On Sat, 2010-08-28 at 10:46 -0700, JD wrote:
>> You need to study fi
JD wrote:
> On 08/28/2010 05:42 PM, Patrick O'Callaghan wrote:
>> On Sat, 2010-08-28 at 15:12 -0700, JD wrote:
>>> On 08/28/2010 01:53 PM, Patrick O'Callaghan wrote:
On Sat, 2010-08-28 at 10:46 -0700, JD wrote:
> You need to study filesystem architecture to gain better
> understandin
On 08/28/2010 05:42 PM, Patrick O'Callaghan wrote:
> On Sat, 2010-08-28 at 15:12 -0700, JD wrote:
>> On 08/28/2010 01:53 PM, Patrick O'Callaghan wrote:
>>> On Sat, 2010-08-28 at 10:46 -0700, JD wrote:
You need to study filesystem architecture to gain better
understanding.
>>> If you can
On 08/28/2010 05:32 PM, James McKenzie wrote:
> Steven Stern wrote:
>> On 08/27/2010 11:25 PM, JD wrote:
>>
>>>Is there a Linux util to scrub free disk blocks and keep everything
>>> else intact ??
>>>
>>>
>> This really is an interes
On Sat, 2010-08-28 at 15:12 -0700, JD wrote:
> On 08/28/2010 01:53 PM, Patrick O'Callaghan wrote:
> > On Sat, 2010-08-28 at 10:46 -0700, JD wrote:
> >> You need to study filesystem architecture to gain better
> >> understanding.
> > If you can't explain what you mean, just say so.
> >
> > poc
> >
>
Steven Stern wrote:
> On 08/27/2010 11:25 PM, JD wrote:
>
>> Is there a Linux util to scrub free disk blocks and keep everything
>> else intact ??
>>
>>
>
> This really is an interested thread... but why do you want to scrub free
> blocks?
>
>
On 08/28/2010 01:53 PM, Patrick O'Callaghan wrote:
> On Sat, 2010-08-28 at 10:46 -0700, JD wrote:
>> You need to study filesystem architecture to gain better
>> understanding.
> If you can't explain what you mean, just say so.
>
> poc
>
I can explain it alright - and I tried to tell you that a pr
On Sat, 2010-08-28 at 10:46 -0700, JD wrote:
> You need to study filesystem architecture to gain better
> understanding.
If you can't explain what you mean, just say so.
poc
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On 08/28/2010 11:05 AM, Steven Stern wrote:
> On 08/27/2010 11:25 PM, JD wrote:
>>Is there a Linux util to scrub free disk blocks and keep everything
>> else intact ??
>>
> This really is an interested thread... but why do you want to scrub free
> blocks?
>
On Sat, Aug 28, 2010 at 13:05:08 -0500,
Steven Stern wrote:
>
> I can think of a few reasons:
>
> 1) You're running Linux in a virtual machine. Zeroing all free space
> makes it easier to compress the image file.
>
> 2) You've been looking at something "bad" and want to make sure all
> traces
On Sat, Aug 28, 2010 at 5:13 PM, Bruno Wolff III wrote:
> On Sat, Aug 28, 2010 at 08:36:48 -0700,
> JD wrote:
>> There is nothing you can do about
>> relocated bad blocks.
>
> You can use secure erase. That is suppsed to try to do something with those.
> You can also use encryption in the first
On 08/27/2010 11:25 PM, JD wrote:
> Is there a Linux util to scrub free disk blocks and keep everything
> else intact ??
>
This really is an interested thread... but why do you want to scrub free
blocks?
I can think of a few reasons:
1) You're running Linux in a virtual machin
On 08/28/2010 10:24 AM, Patrick O'Callaghan wrote:
> On Sat, 2010-08-28 at 07:42 -0700, JD wrote:
>>> However note that neither of these methods guarantees to scrub
>> indirect
>>> blocks in the filesystem that were used to create the space-filling
>>> files. Maybe they do, maybe they don't, it's
On Sat, 2010-08-28 at 07:42 -0700, JD wrote:
> > However note that neither of these methods guarantees to scrub
> indirect
> > blocks in the filesystem that were used to create the space-filling
> > files. Maybe they do, maybe they don't, it's not clear.
> >
> > poc
> >
> Very good.
> Actually, ind
On Sat, Aug 28, 2010 at 08:36:48 -0700,
JD wrote:
> There is nothing you can do about
> relocated bad blocks.
You can use secure erase. That is suppsed to try to do something with those.
You can also use encryption in the first place.
It will be some work to get from where the system is now to
On 08/28/2010 06:31 AM, Robert Nichols wrote:
> On 08/27/2010 11:53 PM, JD wrote:
>> On 08/27/2010 09:25 PM, JD wrote:
>>>Is there a Linux util to scrub free disk blocks and keep everything
>>> else intact ??
>>>
>> Someone (not on th
On 08/28/2010 06:22 AM, Patrick O'Callaghan wrote:
> On Fri, 2010-08-27 at 21:53 -0700, JD wrote:
>> On 08/27/2010 09:25 PM, JD wrote:
>>> Is there a Linux util to scrub free disk blocks and keep everything
>>> else intact ??
>>>
>> Someone (not
On 08/28/2010 06:22 AM, Patrick O'Callaghan wrote:
> On Fri, 2010-08-27 at 21:53 -0700, JD wrote:
>> On 08/27/2010 09:25 PM, JD wrote:
>>> Is there a Linux util to scrub free disk blocks and keep everything
>>> else intact ??
>>>
>> Someone (not
On 08/27/2010 11:53 PM, JD wrote:
>On 08/27/2010 09:25 PM, JD wrote:
>> Is there a Linux util to scrub free disk blocks and keep everything
>> else intact ??
>>
> Someone (not on this list) described a simple way to do this.
> Scrubbing files to be deleted is ea
On Fri, 2010-08-27 at 21:53 -0700, JD wrote:
> On 08/27/2010 09:25 PM, JD wrote:
> > Is there a Linux util to scrub free disk blocks and keep everything
> > else intact ??
> >
> Someone (not on this list) described a simple way to do this.
> Scrubbing files to be del
On 08/27/2010 09:25 PM, JD wrote:
> Is there a Linux util to scrub free disk blocks and keep everything
> else intact ??
>
Someone (not on this list) described a simple way to do this.
Scrubbing files to be deleted is easy enough - there are utils for it
already.
But scrubbing exis
Is there a Linux util to scrub free disk blocks and keep everything
else intact ??
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