true HDD wipe shareware

"Please leave a message at the beep, we will get back to you when your support contract expires."

Moderators: phlip, Moderators General, Prelates

User avatar
goblin_subway
Posts: 351
Joined: Sun Mar 30, 2008 11:40 pm UTC
Location: Kansas City, Kansas, USoA, Earth, Sol System, Milky Way Galaxy

true HDD wipe shareware

Postby goblin_subway » Sat Apr 12, 2008 7:24 am UTC

I am looking for a program that can overwrite (several times) all of my deleted data. Basically, a shareware porgram that can foil the sci-fi of the CSI TV show. Any thoughts?
I am Jack's overused quote.
...
Oh, almost forgot. Fuck MENSA.

User avatar
Bruce
Posts: 447
Joined: Tue Feb 12, 2008 11:44 am UTC
Location: Melbourne

Re: true HD wipe shareware

Postby Bruce » Sat Apr 12, 2008 7:37 am UTC

Specific files or whole file systems?

To do file systems boot any unix (live CD will do) and run:

dd if=/dev/urandom of=/dev/<partition>

Loop for effect, and change to /dev/random if you are the tin foil hat type.
COMFORT, n.
A state of mind produced by contemplation of a neighbor's uneasiness.

User avatar
Torvaun
Posts: 2615
Joined: Mon Aug 13, 2007 6:23 pm UTC
Location: 47°9′S, 126°43′W
Contact:

Re: true HD wipe shareware

Postby Torvaun » Sat Apr 12, 2008 3:48 pm UTC

One might be wondering why you're worried about CSI finding these files. In any case, if you -need- files to be unrecoverable, the proper way to do it is with physical destruction of the drive. If you're not that paranoid, Simple File Shredder will prevent the data from being cheaply recovered (I haven't tested it against more intrusive, and therefore expensive data recovery options).
Hawknc wrote:I don't know if you've never heard of trolling, or if you're just very good at it.

Ended
Posts: 1459
Joined: Fri Apr 20, 2007 3:27 pm UTC
Location: The Tower of Flints. (Also known as: England.)

Re: true HD wipe shareware

Postby Ended » Sat Apr 12, 2008 9:44 pm UTC

Try Eraser (Windows-only), which is open-source and implements the Gutmann method (among others). This should render the data unrecoverable by anyone short of a government intelligence agency. If you're worried that the NSA are going to go to work on your drive then, as Torvaun says, you should physically destroy it. And probably exit the country ;)
Generally I try to make myself do things I instinctively avoid, in case they are awesome.
-dubsola

User avatar
goblin_subway
Posts: 351
Joined: Sun Mar 30, 2008 11:40 pm UTC
Location: Kansas City, Kansas, USoA, Earth, Sol System, Milky Way Galaxy

Re: true HD wipe shareware

Postby goblin_subway » Sun Apr 13, 2008 2:19 am UTC

First, beyond some mundane piracy, I have no illegal content on my computer (I think... see Kiera Knightley in The Hole to experience true grey area). The reason I want it is I am missing massive amounts of space that I cannot acount for. Example: I recently discovered about 2 gigs of porn (legal) stored in some random file I had never heard of. My thought is to do a full wipe and start over.

EDIT: explanation about Knightley. The scene I referred to was filmed when she was 16.
I am Jack's overused quote.
...
Oh, almost forgot. Fuck MENSA.

User avatar
Torvaun
Posts: 2615
Joined: Mon Aug 13, 2007 6:23 pm UTC
Location: 47°9′S, 126°43′W
Contact:

Re: true HD wipe shareware

Postby Torvaun » Sun Apr 13, 2008 2:45 am UTC

Sounds like you're being used as storage. I wouldn't be so positive that everything's legal, and think that wiping and reinstalling is probably the best possible plan.
Hawknc wrote:I don't know if you've never heard of trolling, or if you're just very good at it.

User avatar
goblin_subway
Posts: 351
Joined: Sun Mar 30, 2008 11:40 pm UTC
Location: Kansas City, Kansas, USoA, Earth, Sol System, Milky Way Galaxy

Re: true HD wipe shareware

Postby goblin_subway » Sun Apr 13, 2008 3:02 am UTC

So great to hear....... (eyeing the electromagnet in the shop). Can't... think... of.... correct..... KHAAAAAANNNNNN!!!!!!

Edit: Sorry, all I could think of was a giant-sized Frack, but that seemed reactive. Again, for posterity Frack.
I am Jack's overused quote.
...
Oh, almost forgot. Fuck MENSA.

User avatar
Torvaun
Posts: 2615
Joined: Mon Aug 13, 2007 6:23 pm UTC
Location: 47°9′S, 126°43′W
Contact:

Re: true HD wipe shareware

Postby Torvaun » Sun Apr 13, 2008 3:51 am UTC

Not necessary or overly useful. Easy enough to just format, reinstall. Maybe use a LiveCD to format it with an encrypted file system, then reformat back to NTFS to help kill extraneous data.
Hawknc wrote:I don't know if you've never heard of trolling, or if you're just very good at it.

User avatar
Bruce
Posts: 447
Joined: Tue Feb 12, 2008 11:44 am UTC
Location: Melbourne

Re: true HD wipe shareware

Postby Bruce » Sun Apr 13, 2008 5:56 am UTC

Torvaun wrote:Not necessary or overly useful. Easy enough to just format, reinstall. Maybe use a LiveCD to format it with an encrypted file system, then reformat back to NTFS to help kill extraneous data.

Using dd with dev urandom would be a lot more effective than this. Formatting a partition does not write to that much of the disk.
COMFORT, n.
A state of mind produced by contemplation of a neighbor's uneasiness.

ozark46
Posts: 3
Joined: Wed Apr 16, 2008 8:13 am UTC

Re: true HD wipe shareware

Postby ozark46 » Wed Apr 16, 2008 8:25 am UTC

If you can put the drive under linux in some way, most distro's have the shred command. Which will do exactly what you want several times over.

man shred

If the stuff you want to get rid of is REALLY incriminating, you can always crack open the hard drive, take out the platters, smash them up into little pieces and throw them away in different places.

User avatar
enk
Posts: 754
Joined: Mon Sep 10, 2007 12:20 am UTC
Location: Aalborg, Denmark
Contact:

Re: true HD wipe shareware

Postby enk » Wed Apr 16, 2008 10:00 am UTC

man shred wrote:CAUTION: Note that shred relies on a very important assumption: that the filesystem overwrites data in place. This is the traditional way to do things, but many modern filesystem designs do not satisfy this assumption. The following are examples of filesystems on which shred is not effective:

* log-structured or journaled filesystems, such as those supplied with

AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.)



Btw. please s/HD/HDD/ in the thread subject... HD means High Definition, not Hard Disk Drive. Thanks :wink:
phlip wrote:Ha HA! Recycled emacs jokes.

ozark46
Posts: 3
Joined: Wed Apr 16, 2008 8:13 am UTC

Re: true HDD wipe shareware

Postby ozark46 » Thu Apr 17, 2008 12:52 am UTC

On the note of using shred on journaled filesystems.

Thats only if you use shred on a filesystem level, as in destroying the contents of a single file on your machine. If you use shred on an entire disk it does not matter what filesystem was used on it, shred will work over the entire disk regardless.

The Finn
Posts: 23
Joined: Thu Mar 06, 2008 4:47 pm UTC

Re: true HDD wipe shareware

Postby The Finn » Thu Apr 17, 2008 3:41 pm UTC

If you seek to foil government forensics, then like Frodo, you must toss your scriven rings into the fires of Mount Doom.

There are forensic facilities available to federal officials that can playback magnetic domains that /slopped over/ from the normal write-tracks, analyse those, and reconstruct some data. Sandpapering your platters isn't enough. Cracking them into little tiny bits: not enough. Shredders, massive gaussian flux: not enough. you need to heat them red-hot and then dunk them in a quench tank. Or melt them.

If you just want to foil 99.95% of the regular public, or for your purposes: Any software using the Gutmann method.

User avatar
FACM
Posts: 303
Joined: Thu Aug 09, 2007 6:40 pm UTC

Re: true HDD wipe shareware

Postby FACM » Thu Apr 17, 2008 4:15 pm UTC

Darik's Boot and Nuke might be what you're looking for, especially if you aren't looking to boot to *NIX to run the dd command.

[It's more or less a pretty frontend for that, though. If you want the reliability without dealing with a command line.]

EDIT: Hit submit instead of preview. Whoops.

User avatar
Torvaun
Posts: 2615
Joined: Mon Aug 13, 2007 6:23 pm UTC
Location: 47°9′S, 126°43′W
Contact:

Re: true HDD wipe shareware

Postby Torvaun » Fri Apr 18, 2008 12:09 am UTC

The Finn wrote:If you seek to foil government forensics, then like Frodo, you must toss your scriven rings into the fires of Mount Doom.

There are forensic facilities available to federal officials that can playback magnetic domains that /slopped over/ from the normal write-tracks, analyse those, and reconstruct some data. Sandpapering your platters isn't enough. Cracking them into little tiny bits: not enough. Shredders, massive gaussian flux: not enough. you need to heat them red-hot and then dunk them in a quench tank. Or melt them.

If you just want to foil 99.95% of the regular public, or for your purposes: Any software using the Gutmann method.

Sandpaper is good enough if you completely remove the magnetized surface. Also, a couple minutes in a microwave ought to do it.
Hawknc wrote:I don't know if you've never heard of trolling, or if you're just very good at it.

User avatar
goblin_subway
Posts: 351
Joined: Sun Mar 30, 2008 11:40 pm UTC
Location: Kansas City, Kansas, USoA, Earth, Sol System, Milky Way Galaxy

Re: true HDD wipe shareware

Postby goblin_subway » Fri Apr 18, 2008 2:17 am UTC

I work in a cabinet shop, and I am more than capable of reducing anything from hardened steel on down to shavings or dust.
I am Jack's overused quote.
...
Oh, almost forgot. Fuck MENSA.

User avatar
Torvaun
Posts: 2615
Joined: Mon Aug 13, 2007 6:23 pm UTC
Location: 47°9′S, 126°43′W
Contact:

Re: true HDD wipe shareware

Postby Torvaun » Fri Apr 18, 2008 4:31 am UTC

Wear a filter, it's bad for your lungs.
Hawknc wrote:I don't know if you've never heard of trolling, or if you're just very good at it.

User avatar
goblin_subway
Posts: 351
Joined: Sun Mar 30, 2008 11:40 pm UTC
Location: Kansas City, Kansas, USoA, Earth, Sol System, Milky Way Galaxy

Re: true HDD wipe shareware

Postby goblin_subway » Sat Apr 19, 2008 4:27 am UTC

I wear a breath mask most of the time in the shop, especially when working birch. I have yet to meet a person that doesn't start coughing around birch sawdust.
I am Jack's overused quote.
...
Oh, almost forgot. Fuck MENSA.


Return to “The Help Desk”

Who is online

Users browsing this forum: No registered users and 5 guests