techPowerUp! Forums

Go Back   techPowerUp! Forums > Hardware > Storage

Reply
 
Thread Tools
Old Jun 8, 2012, 02:57 AM   #1
OnePostWonder
200 Posts
 
Join Date: Dec 2008
Posts: 485 (0.30/day)
Thanks: 61
Thanked 89 Times in 70 Posts

System Specs

"Destroying the evidence"

So who is correct?

HTG writer Chris Hoffman on Erasing Data

Center for Magnetic Recording Research

I'd like to hear your opinions on securely erasing modern hard drives. Personally, I'd really love to hear from those of you who have experience using cutting-edge forensic tools.
OnePostWonder is offline  
Reply With Quote
Old Jun 8, 2012, 03:16 AM   #2
KainXS
3500 Posts
 
KainXS's Avatar
 
Join Date: Sep 2007
Posts: 4,678 (2.27/day)
Thanks: 181
Thanked 464 Times in 381 Posts

System Specs

personally I store my sensitive work data on a different drive and keep it.

and i mean keep it because I would get fired if it got out(got like 4 now over the years). I horde all my pc parts really
KainXS is offline  
Reply With Quote
Old Jun 8, 2012, 03:24 AM   #3
Norton
WCG Team Assistant
 
Norton's Avatar
 
Join Date: Dec 2011
Location: Northeast, USA
Posts: 5,133 (9.95/day)
Thanks: 5,364
Thanked 10,021 Times in 3,163 Posts

System Specs

Best method right here:



No undo button though!
__________________
Why sit on the Bench when you can get in the game and Crunch!!!- World Community Grid (FTW)
CPU crunchers- FX-8350(4.4)/FX-8150(4.0)/FX-6200(4.0)/ PII 1045T/PII 1045T/i7-920/Xeon (6c/12t)....(44 cores/54 threads)
GPU crunchers- no WCG GPU work available
Folding@Home- 2x GTX 580's

WCG-TPU Mothers Day Challenge (5/10 thru 5/19- crunch for our Team, for Mom, for games and prizes )
Norton is online now  
Crunching for Team TPU More than 25k PPD
Reply With Quote
The Following 4 Users Say Thank You to Norton For This Useful Post:
Old Jun 8, 2012, 03:32 AM   #4
KainXS
3500 Posts
 
KainXS's Avatar
 
Join Date: Sep 2007
Posts: 4,678 (2.27/day)
Thanks: 181
Thanked 464 Times in 381 Posts

System Specs

yea i know alot of people who use that method
KainXS is offline  
Reply With Quote
Old Jun 8, 2012, 03:58 AM   #5
ThE_MaD_ShOt
3500 Posts
 
ThE_MaD_ShOt's Avatar
 
Join Date: Nov 2011
Location: Hi! I'm from the Internet
Posts: 3,739 (6.96/day)
Thanks: 2,532
Thanked 2,443 Times in 1,468 Posts

System Specs

Quote:
Originally Posted by Norton View Post
Best method right here:

http://img.techpowerup.org/120607/mini sledge.jpg

No undo button though!
That is one of the best ways to kill data.
__________________
Crunchers : Phenom II x6 1090t / 2x Phenom II x6 1055t / Phenom II x4 970BE /
“I always succed in my mission tho. Beer just delays it!” -ChaoticAtmosphere
“TPU is very mild, and I love to tell people I love them when they are being retarded, it makes me feel special in my special places. What was the point of this thread again? Oh well, I love all of you.” -Steevo

ThE_MaD_ShOt is online now  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 04:02 AM   #6
CaptainFailcon
Banned
 
Join Date: Apr 2012
Posts: 193 (0.50/day)
Thanks: 12
Thanked 41 Times in 38 Posts

heat more precisely >> fire is the most effective way heat destroys the plating on the platters turning them to dust Rendering the drive 100% completely unrecoverable even by advanced lasers
CaptainFailcon is offline  
Reply With Quote
Old Jun 8, 2012, 04:21 AM   #7
natr0n
1000 Posts
 
natr0n's Avatar
 
Join Date: Jan 2012
Location: FL,USA
Posts: 1,115 (2.34/day)
Thanks: 241
Thanked 573 Times in 293 Posts

System Specs

I use hdtune and some others, anything that writes 0's basically works but only full format.
natr0n is offline  
Reply With Quote
Old Jun 8, 2012, 04:34 AM   #8
FordGT90Concept
"I go fast!1!11!1!"
 
FordGT90Concept's Avatar
 
Join Date: Oct 2008
Location: IA, USA
Posts: 10,567 (6.29/day)
Thanks: 1,752
Thanked 2,594 Times in 1,959 Posts

System Specs

Gutmann's algorithm is the best (as in most destructive to data) way to erase data.

I use DoD 5220.22-M algorithm to erase data. It isn't the best, but most of the data won't be recoverable.

If the drive is not important to me, I usually try to dismantle it (deforming the platters in the process), and putting a magnet directly on the platters.

The absolute best way to destroy data on a hard drive and likely the hard drive too is to use a degausser. They often cost $3000+ though so not very practical for small outfits. If you want the best of the best, find a degausser that has the NSA (National Security Agency) seal of approval. Here's an example of NSA approved device and it runs for over $21,000: http://www.datadev.com/degausser-sdd-master.html
__________________
Golden Rule of Programming: Never assume.

try { SteamDownload(); }
catch (Steamception ex) { RageQuit(); }

Last edited by FordGT90Concept; Jun 8, 2012 at 04:49 AM.
FordGT90Concept is offline  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 04:36 AM   #9
D007
2000 Posts
 
D007's Avatar
 
Join Date: Mar 2007
Location: Pompano beach, Florida
Posts: 2,462 (1.09/day)
Thanks: 453
Thanked 331 Times in 264 Posts
Send a message via MSN to D007

System Specs

Lol this topic scares me... I don't even wanna know what you need to erase so badly.. XD
__________________
There is nothing more dangerous than sincere ignorance and conscientious stupidity. "Martin Luther King"
D007 is offline  
Reply With Quote
The Following User Says Thank You to D007 For This Useful Post:
Old Jun 8, 2012, 05:40 AM   #10
silkstone
2000 Posts
 
silkstone's Avatar
 
Join Date: Nov 2008
Location: HCM Vietnam
Posts: 2,160 (1.30/day)
Thanks: 321
Thanked 340 Times in 283 Posts

System Specs

Quote:
Originally Posted by D007 View Post
Lol this topic scares me... I don't even wanna know what you need to erase so badly.. XD
If you are running a business, you wouldn't want your competition to get hold of your old disk drives.
__________________
Thanks to BradleyKZN for polishing my sig

“oooooooooooh fire!!! and girls...GIRLS and fire!!!!!!! oooooooooooooh *runz around clapping hands together*” -Marineborn
silkstone is online now  
Reply With Quote
Old Jun 8, 2012, 08:54 AM   #11
Aquinus
3500 Posts
 
Aquinus's Avatar
 
Join Date: Jan 2012
Location: Dover, New Hampshire, USA
Posts: 4,233 (8.87/day)
Thanks: 1,259
Thanked 1,314 Times in 976 Posts

System Specs

Quote:
Originally Posted by CaptainFailcon View Post
heat more precisely >> fire is the most effective way heat destroys the plating on the platters turning them to dust Rendering the drive 100% completely unrecoverable even by advanced lasers
HDD platters are metalic, I'm pretty sure they don't "burn and turn to dust." Last I checked, heated metals melt not burn. Yeah, melting them will do that, but I'm sure a sledge hammer is the cheaper option. a 7-pass or 32-pass zero-out should work just as well too.
__________________
MyHeat
Aquinus is offline  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 09:44 AM   #12
Jetster
2000 Posts
 
Jetster's Avatar
 
Join Date: Jan 2010
Location: Oregon
Posts: 2,859 (2.35/day)
Thanks: 924
Thanked 851 Times in 624 Posts

System Specs

7 pass is the standard for platter drives. I don't think you can erase a SSD drive, at least completely

http://cmrr.ucsd.edu/people/Hughes/SecureErase.shtml

Last edited by Jetster; Jun 8, 2012 at 09:51 AM.
Jetster is offline  
Reply With Quote
Old Jun 8, 2012, 10:03 AM   #13
Aquinus
3500 Posts
 
Aquinus's Avatar
 
Join Date: Jan 2012
Location: Dover, New Hampshire, USA
Posts: 4,233 (8.87/day)
Thanks: 1,259
Thanked 1,314 Times in 976 Posts

System Specs

Quote:
Originally Posted by Jetster View Post
7 pass is the standard for platter drives. I don't think you can erase a SSD drive, at least completely
I think your right, since the SSD will write to blocks with the least number of writes. However someone who wanted to recover this data would have a hell of a time because SSDs relocate sectors and blocks pretty often to reduce SSD wear on writes to distribute writes out along the entire drive.
__________________
MyHeat
Aquinus is offline  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 10:13 AM   #14
_JP_
2000 Posts
 
_JP_'s Avatar
 
Join Date: Apr 2010
Location: Portugal
Posts: 2,112 (1.87/day)
Thanks: 1,952
Thanked 644 Times in 466 Posts

System Specs

1 - Turn on HDD.
2 - Attach rare-earth magnet to either side, top or bottom.
3 - ???
4 - PROFIT!

PROTIP: Slide the magnet around the HDD for maximum performance!
_JP_ is offline  
Reply With Quote
The Following User Says Thank You to _JP_ For This Useful Post:
Old Jun 8, 2012, 10:26 AM   #15
Aquinus
3500 Posts
 
Aquinus's Avatar
 
Join Date: Jan 2012
Location: Dover, New Hampshire, USA
Posts: 4,233 (8.87/day)
Thanks: 1,259
Thanked 1,314 Times in 976 Posts

System Specs

Quote:
Originally Posted by _JP_ View Post
1 - Turn on HDD.
2 - Attach rare-earth magnet to either side, top or bottom.
3 - ???
4 - PROFIT!

PROTIP: Slide the magnet around the HDD for maximum performance!
You will destroy the data but you could damage the drive itself or the read/write head if you use a magnet too strong. Also you might not scramble everything if you use a magnet not strong enough. 7-pass format makes for a good test to make sure the drive is reliable as well.
__________________
MyHeat
Aquinus is offline  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 10:55 AM   #16
_JP_
2000 Posts
 
_JP_'s Avatar
 
Join Date: Apr 2010
Location: Portugal
Posts: 2,112 (1.87/day)
Thanks: 1,952
Thanked 644 Times in 466 Posts

System Specs

If the drive is still functional, someone might still try to recover some data off it. I want the data to become non-existent and unobtainable. Even if it means killing the HDD.
_JP_ is offline  
Reply With Quote
Old Jun 8, 2012, 11:13 AM   #17
Raw
200 Posts
 
Raw's Avatar
 
Join Date: Mar 2011
Location: The CONSTITUTIONAL United States Of America
Posts: 323 (0.41/day)
Thanks: 154
Thanked 71 Times in 51 Posts

System Specs

use a torch

Quote:
Originally Posted by _JP_ View Post
If the drive is still functional, someone might still try to recover some data off it. I want the data to become non-existent and unobtainable. Even if it means killing the HDD.
The only sure way I know of is to use a torch. A real torch as in acetylene/oxygen. The flame burns at about 6,330 °F (3,500 °C). You wind up with a small puddle of metal.
Take the drive cover off and melt the platters, takes all of 5 seconds, gone forever.
__________________

REMEMBER 911-
Raw is offline  
Reply With Quote
Old Jun 8, 2012, 11:22 AM   #18
Jetster
2000 Posts
 
Jetster's Avatar
 
Join Date: Jan 2010
Location: Oregon
Posts: 2,859 (2.35/day)
Thanks: 924
Thanked 851 Times in 624 Posts

System Specs

Anyone can break a drive. The trick is to looses the data and same the drive

Last edited by Jetster; Jun 8, 2012 at 12:27 PM.
Jetster is offline  
Reply With Quote
Old Jun 8, 2012, 11:40 AM   #19
qubit
Overclocked quantum bit
 
qubit's Avatar
 
Join Date: Dec 2007
Location: Quantumville UK
Posts: 8,640 (4.34/day)
Thanks: 4,169
Thanked 3,301 Times in 1,941 Posts

System Specs

I simply hit the delete button and the data is gone...
__________________
Siggie in the post.
qubit is offline  
Reply With Quote
The Following User Says Thank You to qubit For This Useful Post:
Old Jun 8, 2012, 12:00 PM   #20
Aquinus
3500 Posts
 
Aquinus's Avatar
 
Join Date: Jan 2012
Location: Dover, New Hampshire, USA
Posts: 4,233 (8.87/day)
Thanks: 1,259
Thanked 1,314 Times in 976 Posts

System Specs

Quote:
Originally Posted by qubit View Post
I simply hit the delete button and the data is gone...
Not true. Only the record on the file system is deleted. The data is still there until something else writes over it, unless you're using an SSD with TRIM and/or garbage collection.
__________________
MyHeat
Aquinus is offline  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 12:08 PM   #21
qubit
Overclocked quantum bit
 
qubit's Avatar
 
Join Date: Dec 2007
Location: Quantumville UK
Posts: 8,640 (4.34/day)
Thanks: 4,169
Thanked 3,301 Times in 1,941 Posts

System Specs

Quote:
Originally Posted by Aquinus View Post
Not true. Only the record on the file system is deleted. The data is still there until something else writes over it, unless you're using an SSD with TRIM and/or garbage collection.
Gotcha! I was talking tongue in cheek. Look at my post again...
__________________
Siggie in the post.
qubit is offline  
Reply With Quote
The Following User Says Thank You to qubit For This Useful Post:
Old Jun 8, 2012, 12:22 PM   #22
Aquinus
3500 Posts
 
Aquinus's Avatar
 
Join Date: Jan 2012
Location: Dover, New Hampshire, USA
Posts: 4,233 (8.87/day)
Thanks: 1,259
Thanked 1,314 Times in 976 Posts

System Specs

Quote:
Originally Posted by qubit View Post
Gotcha! I was talking tongue in cheek. Look at my post again...
I'm not catching it, but I will take your word for it.
__________________
MyHeat
Aquinus is offline  
Crunching for Team TPU
Reply With Quote
Old Jun 8, 2012, 12:24 PM   #23
pantherx12
Eligible for custom title
 
pantherx12's Avatar
 
Join Date: Jan 2009
Location: ENGLAND-LAND-LAND
Posts: 8,443 (5.28/day)
Thanks: 1,188
Thanked 1,705 Times in 1,375 Posts

System Specs

I take the platters out and use them as Frisbees in areas with lots of concrete.

One of the funner ways to make sure your data is safe!
pantherx12 is offline  
Reply With Quote
Old Jun 8, 2012, 12:30 PM   #24
FreedomEclipse
Crazy Dogmatic Bullsh!t!
 
FreedomEclipse's Avatar
 
Join Date: Apr 2007
Location: (British Born Chinese) London, United Kingdom
Posts: 7,516 (3.38/day)
Thanks: 823
Thanked 1,598 Times in 1,281 Posts

System Specs

Id do it the american way and use one of these babys...

Spoiler
__________________

“I used to be a serial upgrader like you, then i took a downgrade to the knee” -FreedomEclipse
FreedomEclipse is offline  
Reply With Quote
The Following 4 Users Say Thank You to FreedomEclipse For This Useful Post:
Old Jun 8, 2012, 12:34 PM   #25
caleb
1000 Posts
 
Join Date: Sep 2004
Location: Poland,Slask
Posts: 1,101 (0.35/day)
Thanks: 200
Thanked 173 Times in 141 Posts

System Specs

Magnets do wonders do HDDs
__________________
"Let me noobilize you"
caleb is offline  
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
With "Mountain Lion", Apple Drops the "Mac" in OS X btarunr News 13 Feb 16, 2012 09:50 PM
Remember the "After Dark" ScreenSavers? Well, here is "FLYING TOASTERS", for Win32! Alec§taar General Software 1 Feb 6, 2007 07:47 PM


All times are GMT. The time now is 09:14 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd.
no new posts