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| GhostRider |
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 GhostRider World Chat Champion

Joined: 31 Jan 2008 Karma :  
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 Posted: 15:50 - 06 Apr 2015 Post subject: Best way to wipe a hard drive before reselling? |
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Greetings,
Old laptops power connector and power supply shafted it, missus bought me a new laptop, so no point in bothering to repair the old one (besides I lost my temper and tore a bit of the plastic body off around the power connector anyway).
Anyways, I can fetch more cash selling it in parts than as a whole. The hard drive is a western digital 2.5" sata 250gb so will fetch about £20.
What's the best way to go about deep cleaning the hdd before flogging it, as I'm sure someone savvy enough could probably find credit card details etc if they were determined enough, so I'm doubting a simple format would suffice.
Any software recommendations?
Cheers,
GhostRider ____________________ I have all the characteristics of a human being: blood, flesh, skin, hair; but not a single, clear, identifiable emotion, except for greed and disgust. Something horrible is happening inside of me and I don't know why. My nightly bloodlust has overflown into my days. I feel lethal, on the verge of frenzy. I think my mask of sanity is about to slip. |
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| Sload |
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 Sload World Chat Champion

Joined: 28 Aug 2011 Karma :   
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| iooi |
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 iooi Super Spammer

Joined: 14 Jan 2007 Karma :    
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 Posted: 16:05 - 06 Apr 2015 Post subject: |
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Buy a Case and use it as a back up drive  ____________________ Just because my bike was A DIVVY, does not mean i am...... |
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| Ste |
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 Ste Not Work Safe

Joined: 01 Sep 2002 Karma :    
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 Posted: 16:10 - 06 Apr 2015 Post subject: |
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Angle grinder.
And you're meant to use an OS that's on a USB stick such as Tails.  |
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| Pol Anorl |
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 Pol Anorl Banned

Joined: 13 Apr 2010 Karma :     
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 Posted: 18:00 - 06 Apr 2015 Post subject: |
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use it as a back up hard drive? i have 4 of them ____________________ GOOD GAME BODYGUARD: https://i.imgur.com/8WePGgf.jpg
20:30:37 Pyro.: I don't sort of like men, I take every advantage to choke on dick.
Jewlio Iglesias: You live in Liverpool - Chances are, the front door has already been kicked off the hinges |
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| c_dug |
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 c_dug Super Spammer

Joined: 04 Sep 2007 Karma :    
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| Islander |
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 Islander World Chat Champion

Joined: 05 Aug 2012 Karma :    
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| prawny1 |
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 prawny1 World Chat Champion

Joined: 28 Jun 2005 Karma :    
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| Andy_Pagin |
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 Andy_Pagin World Chat Champion

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| Accuhaler |
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 Accuhaler Nitrous Nuisance
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| GhostRider |
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 GhostRider World Chat Champion

Joined: 31 Jan 2008 Karma :  
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| Islander |
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 Islander World Chat Champion

Joined: 05 Aug 2012 Karma :    
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| ScaredyCat |
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 ScaredyCat World Chat Champion

Joined: 19 May 2012 Karma :   
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| J.M. |
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 J.M. World Chat Champion

Joined: 27 Mar 2011 Karma :    
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| prawny1 |
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 prawny1 World Chat Champion

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| daemonoid |
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 daemonoid World Chat Champion

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| J.M. |
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 J.M. World Chat Champion

Joined: 27 Mar 2011 Karma :    
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 Posted: 08:15 - 10 Apr 2015 Post subject: |
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I'd imagine that some of the data recovery companies use proprietary software to perform recovery - which wouldn't work after the data has been overwritten for obvious reasons. I'd be happy to part with a hard drive after doing the kind of deletion mentioned there.
The only technique that I know of is Magnetic Forced Microscopy. It's not going to get you 100% data restoration. It's also a 30-year old technique that doesn't really work very well with the current highly-dense hard drives.
| Secure Deletion of Data wrote: | 9. Conclusion
Data overwritten once or twice may be recovered by subtracting what is expected to be read from a storage location from what is actually read. [...]
Epilogue
In the time since this paper was published, some people have treated the 35-pass overwrite technique described in it more as a kind of voodoo incantation to banish evil spirits than the result of a technical analysis of drive encoding techniques. As a result, they advocate applying the voodoo to PRML and EPRML drives even though it will have no more effect than a simple scrubbing with random data. In fact performing the full 35-pass overwrite is pointless for any drive since it targets a blend of scenarios involving all types of (normally-used) encoding technology, which covers everything back to 30+-year-old MFM methods (if you don't understand that statement, re-read the paper). If you're using a drive which uses encoding technology X, you only need to perform the passes specific to X, and you never need to perform all 35 passes. For any modern PRML/EPRML drive, a few passes of random scrubbing is the best you can do. As the paper says, "A good scrubbing with random data will do about as well as can be expected". This was true in 1996, and is still true now.
Looking at this from the other point of view, with the ever-increasing data density on disk platters and a corresponding reduction in feature size and use of exotic techniques to record data on the medium, it's unlikely that anything can be recovered from any recent drive except perhaps a single level via basic error-cancelling techniques. In particular the drives in use at the time that this paper was originally written are long since extinct, so the methods that applied specifically to the older, lower-density technology don't apply any more. Conversely, with modern high-density drives, even if you've got 10KB of sensitive data on a drive and can't erase it with 100% certainty, the chances of an adversary being able to find the erased traces of that 10KB in 200GB of other erased traces are close to zero.
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So whilst this technique does still exist, it's highly unsuccessful for modern data recovery. It more indicates that there is still a minute risk in data deletion. However, the thought of somebody attempting this in the hopes of retrieving a single person's CC or Paypal account, from a HDD that may not even contain that information, is preposterous.
Only a single overwrite of a file, with any data, is required to stop off the shelf recovery tools from working. And to think that anybody is going to attempt anything more sophisticated than that to steal an everyday Joe's data is absolute paranoia in my mind. ____________________ 2004 R1 & 2018 XSR900 |
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| Polarbear |
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 Polarbear Super Spammer

Joined: 24 Feb 2007 Karma :  
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| DrSnoosnoo |
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 DrSnoosnoo World Chat Champion

Joined: 28 Mar 2012 Karma :   
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| GhostRider |
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 GhostRider World Chat Champion

Joined: 31 Jan 2008 Karma :  
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 Posted: 20:59 - 10 Apr 2015 Post subject: |
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| snoosnoo wrote: | I'll give you £15 and will chuck it in my PS3 and promise to never attempt to get in your paypal. You can be sure of this as I can barely work facebook! |
Deal, have your people contact my people, we'll do lunch and negotiate the terms, draft up the contracts, then settle lands and titles.
So yeah, pm me.
GhostRider ____________________ I have all the characteristics of a human being: blood, flesh, skin, hair; but not a single, clear, identifiable emotion, except for greed and disgust. Something horrible is happening inside of me and I don't know why. My nightly bloodlust has overflown into my days. I feel lethal, on the verge of frenzy. I think my mask of sanity is about to slip. |
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| DrSnoosnoo |
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 DrSnoosnoo World Chat Champion

Joined: 28 Mar 2012 Karma :   
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Old Thread Alert!
The last post was made 11 years, 178 days ago. Instead of replying here, would creating a new thread be more useful? |
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