How To: Erase Your Hard Drive
If, for some reason, you have a hard drive that you really, really, want to erase today is your lucky day. bbum has posted some tips for erasing a drive, and reminds you that even broken drives should be "erased."
The best way to really "erase" a drive is to take it apart and destroy it:
Me? I take dead drives apart. They have amazingly powerful magnets inside, along with all kinds of very useful screws, washers, nuts, coils, and other fiddly bits.Or you could drop a pinball on your drive and take a picture with a high speed camera...—MEGHANN MARCOThe platters, obviously, contain the data and they should be destroyed. I run one of the magnets over them upon removal and then keep a stack of the platters around as they have proven to be incredibly useful! The platters have been used for everything as clamp pads for gluing stuff to spacers to level a table or work surface to being used by my son as part of a bug house.
Erase that hard drive! [bbum's weblog-o-mat via Hackzine]
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Nah. Here's how to destroy any media you want, to full government standards for top secret information:
http://csrc.nist.gov/publications/nistpubs/800-88/NISTSP80...
They include links to free disk cleaning tools.
Gosh if I have the time, sure gutting for components is lots of fun. But what if I don't but want to make sure it can be used? My standard approach -- 3/8ths" drill bit, a Craftsman electric drill and a pair of protective glasses. Just bore two holes all the way thru the case. Target it to go thru the platters.
Then just chuck it. :)
Also on the mac side, if you REALLY need to securely erase a disk, using Disk Utility you can zero out, 7 pass or even 35 pass your files. You will have to boot from a Install disk though if its you only hard drive and are clearing it up before giving the machine to someone else.
If its your boot volume and you simply want to make sure your deleted files are well deleted, you can secure delete then use Disk Utility to run any of those erase procedures on just the deleted files.
If you have stuff that's so necessary to keep from prying eyes, you shouldn't have it on your computer in the first place. Other than total physical destruction of your hard drive platter, nothing will keep a determined person or agency from reading your secrets. Take the thing apart, smash it up as well as you can, and then (on some moonless night) take it to a deserted area and bury it in the ground. Deep. And don't forget to replace your divots.
@Falconfire: I'd add that these methods (7 and 35-pass zero-writing) are pretty much the end-all be-all of deleting your data.
Plus, you get to, like, keep the hard drive and stuff.
i go destructo on drives that we cycle out at work. it's my favorite job duty when we replace a machine. remove drive, disassemble, shatter the piss out of the media & then i split the chunks in two & throw half away at work & half at home.
ok, now that i actually read that, i think maybe i need to see a shrink about my OCD.
disassembling the hard disk to the point you remove individual platters renders the platters unreadable anyway. data is written vertically down the cylinder that the platters make, so as soon as they are misaligned, virtually all files are no longer readable, unless you have a file that does not span a platter, which is unlikely, or extremely small.
This reasoning also doesn't even account for having the platters exposed to a non-clean-room-environment! How many PPM is your living room?
Just don't clean your hard disk this way.
@SpyMaster: Dude, WTF are you keeping on your drive, yo?
Destroying the platters on any drive, save a busted one you can't zero out, is a bit overzellous - to put it lightly.
Seriously - unless you're the NSA or a druglord (or just a bored geek), physically destroying the drive is total overkill. If you actually think that someone is after your old Babalyon 5 episodes and just *your* SSN (or, hell, even the SSNs of your entire extended family) to go to the trouble to try and re-create a 7-pass zero'd drive...you need to take a reality check.
Keep in mind that zeroing a drive is rather invasive. I tried it on an old 80GB drive that I sold and it took a good 45 min to complete. Since I got my Mac, I just encrypt all of my sensitive data manually. OS X has a great terminal based encryption utility called openssl, and its capable of encrypting just about any file you throw at it using just about any algorithm. Just use 128 or 256 bit AES encryption and decryption is impossible without the passphrase.
Want to destroy the contents of your hard drive? Just lend it to the Alaska Department of Revenue and tell them their tax data is on it.
http://www.greenoptions.com/news/alaskas_38_000_000_000_ha...
@wesrubix: Thats not exactly true. The FBI crime lab has routinely gotten back "destroyed" data that someone though they cleared out by destroying the platers, or by taking apart the drive.
the only safe way is to zero out, THEN destroy the platers, but then at that point your pretty much gotten on the destruction of evidence if there was a criminal reason for why you where destroying them.
My husband once took a sledgehammer to his hard drive, but he also demolished the rest of his computer. Not only was it obsolete and a total lemon, but despite his best efforts it was totally infested with viruses and whatnot. The sledgehammer was the restrained route - what he REALLY wanted to do was chuck the whole thing out our back window onto the alley.
Then he upgraded to a Sony Viao and all was right with the world.
.....I think running dBan will pretty much foil even the FBI. It takes almost 24 hours on a 300 gig SATA drive. It won't get rid of a boot-sector virus, though. You need testdisk to overwrite that...
.....I've kept every drive I've ever had, stacked up on a shelf in the basement. If nothing else, I know where to go if I need a jumper!
Hi,
You can erase your data by formatting your hard drive it. But simple formatting doesn't erase data permanently. To wipe your data use stellar drive wipe software which wipe data beyond recovery
Thanks










Just to point out from TFA, the dropping a pinball and taking a picture of it shattering only works with the glass/plastic based HD platters. Metal ones dont shatter.