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Old 09-05-2007, 07:10 AM   #1
ulonggapo
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Wiping multiple HDs


I am currently using helix's dcfldd of=/dev/sdx pattern=00 to wipe hard drives. I have multiple hard drives connected to the computer and had to manually change the device on the command line everytime it finishes. Is there a way to automate the process (script?) by which it will identify all data storage devices on the computer and wipe them? It doesn't have to wipe all at the same time, it could just wipe the drives one at a time.

I am new to linux so I don't know a whole lot. I did found a software called DBAN. I informed my employer about it and she said that helix is the preferred software by the client.

v/r
marc
 
Old 09-05-2007, 07:25 AM   #2
ElvisImprsntr
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The DoD will tell you you really can't completely (due to dynamic sector re-mapping) wipe a HD without tools that allow writes to previously declared bad sectors, but here is an excellent source of tools http://www.thefreecountry.com/securi...redelete.shtml. I'd stick with tools that support DoD techniques. Takes longer, but worth it for hard drives that contained sensitive information.
 
Old 09-05-2007, 07:36 AM   #3
tazman0426
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Wiping HDD

Quote:
Originally Posted by ulonggapo View Post
I am currently using helix's dcfldd of=/dev/sdx pattern=00 to wipe hard drives. I have multiple hard drives connected to the computer and had to manually change the device on the command line everytime it finishes. Is there a way to automate the process (script?) by which it will identify all data storage devices on the computer and wipe them? It doesn't have to wipe all at the same time, it could just wipe the drives one at a time.

I am new to linux so I don't know a whole lot. I did found a software called DBAN. I informed my employer about it and she said that helix is the preferred software by the client.

v/r
marc
I found a utility that will wipe all HD connected to your system using DOD techniques. It is Darik's Boot & Nuke, DBAN. It books a mini linux OS and provides a simple menu to wipe the disks. Here is an excerpt from the website. http://dban.sourceforge.net/

Darik's Boot and Nuke

Darik's Boot and Nuke ("DBAN") is a self-contained boot floppy that securely wipes the hard disks of most computers. DBAN will automatically and completely delete the contents of any hard disk that it can detect, which makes it an appropriate utility for bulk or emergency data destruction.

DBAN is a means of ensuring due diligence in computer recycling, a way of preventing identity theft if you want to sell a computer, and a good way to totally clean a Microsoft Windows installation of viruses and spyware. DBAN prevents or thoroughly hinders all known techniques of hard disk forensic analysis.
Download

* Darik's Boot and Nuke 1.0.7 DBAN Project Dontations
o New DBAN users should read the README.TXT file.
o Download DBAN for installation on CD and DVD media.
o Download DBAN for installation on floppy disks and USB flash drives.

Hope this works for you.

r, Jim
 
Old 09-05-2007, 08:37 AM   #4
farslayer
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SO they have you writing a pattern of all Zeros to the Disk Once using Helix and dd ? I would think that is far less secure than overwriting the drive multiple times using various bit patterns. I believe the DoD standard is 7 Overwrites of the media.

I use DBAN as well and just boot from the CD and type autonuke. It then automatically wipes all the drives in a system.

I would suggest you present the differences between your current methods (single overwrite of all Zeros) and a method that does multiple passes of random data such as dban.
 
  


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