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jefro 11-15-2012 08:06 PM

Erase hard drives
 
I used to joke that a hammer is the best way and have actually done it more than a few times.

I think I have a much better way now. Get one of these. http://www.newegg.com/Product/Produc...-pla-_-NA-_-NA if there is enough ferrous metal in the drive it ought to destroy it.


If you do attempt such a thing, do it in a safe place and away from people and pets and have an extension cord to pull to stop it. It might put out some toxic smoke.

pixellany 11-15-2012 08:17 PM

The hammer is cheaper....;)

Last time I did this "final erase", I removed all the magnets first----they must be good for something......

jefro 11-15-2012 09:40 PM

I used to LOVE the old big scsi drives. I still have some of the big magnets.

H_TeXMeX_H 11-16-2012 03:29 AM

The best way is to do it via sofware, or take the platters out and run a big magnet over them. Then at your choice you can smash them with a sledgehammer.

penguinator 11-18-2012 03:18 PM

The worst thing I hate about using software to securely erase hard drives is it takes too long especially when you need to do multiple passes.

This is how I erase/destroy hard drives. I do a dd if=/dev/urandom of=/dev/sdx on the drive one time. Then I remove the hard drive and disassemble it. I then destroy the pieces and platters as much as I could.

H_TeXMeX_H 11-19-2012 07:57 AM

Using 'wipe' is much faster than /dev/urandom. If you are going to take it apart anyway, there's no need to wipe it with software, instead use a powerful magnet on the platters themselves.

penguinator 11-19-2012 12:53 PM

I was thinking of upgrading to SSD drives in the future. Having a hard drive in today's world is like using a record player. it's old technology. However, after looking at these SSD drives, the prices are too high for so little storage.

Sooo, I will be stuck with my so called record player for a while.

Maybe I'll try the magnet trick in the future or add it to my current way of destroying platters i.e drilling holes into the platters :)

jefro 11-19-2012 07:11 PM

Yep, the ssd's are still high but dropping fast as well as getting bigger and faster so you have to figure that too. They are not immune to needing special erase also. Data can get locked inside them.

penguinator 11-19-2012 08:22 PM

Quote:

Originally Posted by jefro (Post 4832926)
Yep, the ssd's are still high

I know, SLC SSD drives are almost twice or triple the price of the MLC types with the same amount of storage.

Quote:

Originally Posted by jefro (Post 4832926)
Data can get locked inside them.

Very interesting.

PS: I found this link on youtube. It's a basic overview of SSD drives i.e types, terms, etc.
http://www.youtube.com/watch?v=gpVyn2izhRo

H_TeXMeX_H 11-20-2012 03:48 AM

Quote:

Originally Posted by jefro (Post 4832926)
Yep, the ssd's are still high but dropping fast as well as getting bigger and faster so you have to figure that too. They are not immune to needing special erase also. Data can get locked inside them.

Yes, they require special methods to erase data ... and who knows how secure they really are. I think this is why they are pushing them and raising the prices of HDDs. [/end of conspiracy theory]

sundialsvcs 11-21-2012 06:42 AM

this should do it ...

weirdwolf 11-23-2012 02:30 PM

A BFH should work equally well with SSD's or HDD's if the proper technique is judiciously applied. ;) Not as eloquent as sundialsvcs's suggestion (I like how you think...) but you shouldn't need a sunblock with a SPF 37,000,000,000 either. :D Perhaps the ABL now that it's not being used...

linosaurusroot 11-23-2012 03:33 PM

Quote:

Originally Posted by penguinator (Post 4832183)
dd if=/dev/urandom of=/dev/sdx


If you don't set a large blocksize of course it's slow.

penguinator 11-23-2012 05:04 PM

Quote:

Originally Posted by linosaurusroot (Post 4835732)
If you don't set a large blocksize of course it's slow.

Actually, I do -- but I forgot to add it. I use bs=1M. I sometimes use DBan only when I want to wipe it and give the drive to someone else or reuse the drive in the future.

Either way, both take a considerable about of time. Which is why I do this at night and hope it'll be done when I wake up in the morning.

H_TeXMeX_H 11-24-2012 04:32 AM

Again using wipe is much faster than /dev/urandom, and is just as secure.


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