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15th November 2018, 04:25 PM #16SENIOR MEMBER
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I think that the issue is that how the disk overwrites the data. If you've defragged a drive you would have seen that your files are spread all over the drive.
Writing music onto the disk might not overwrite it all, unless you fill it to capacity.
As confidential data is involved i wouldn't risk it.
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15th November 2018 04:25 PM # ADSGoogle Adsense Advertisement
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15th November 2018, 04:28 PM #17GOLD MEMBER
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While it's almost impossible to retrieve the file intact if the space is overwritten. It might still be possible to retrieve some data. Also the windows file systems does not give you the option of writing to a particular physical space. In fact it purposely try to avoid physical spaces that had been used.
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15th November 2018, 04:29 PM #18China
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The only 100% fail safe method is to physically destroy the drive/disc
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15th November 2018, 04:35 PM #19
In fact there was only ~10Gb of free space what with Windows etc, so I copied a 12Gb folder to it....should be running out of space any time now....
Yes, I used to defrag this drive, although I read somewhere that SSDs don't need defragging, and it is actually bad for them?
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15th November 2018, 05:12 PM #20.
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To be sure you need to rewrite scrambled data over it multiple times.
Getting at the previous layer is apparently not that hard but the success rate varies, and not all of the data can be reclaimed.
This is why its not considered a viable way of getting more storage
Recovering subsequent layers gets harder and more expensive to recover and progressively less of the files are recoverable.
Previous layers cannot currently be recovered unless the crims have the physical device in their hand ie not network retrievable.
A 3 times overwrite will be secure to everyone except orgs like a national security agency or similar IT crooks.
IT security companies do it up to 7 times and by then the any remaining fragments of the original are too small to make sense.
eg see https://www.techrepublic.com/blog/th...e-think-again/
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15th November 2018, 09:20 PM #21GOLD MEMBER
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most overwrite-multiple-times guidelines were based on the fact that those-who-wanted-it would be able to read "layers" of older magnetic data from the spinning platter hard disk. In most SSDs, there's no chance of being able to recover after an overwrite.
But like many have said, the real answer is physical damage if you're ultra nervous. Take it out, destroy it, and be comfortable - or just reinstall the OS and people will be happy they have a working (2007 era) PC
Perhaps you should save a copy of this thread on the drive, written so many times over to fill it up, so if anyone finds it and resurrects it, they can at least see you've gone to pretty reasonable measures
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15th November 2018, 09:49 PM #22
That's why I'm worried about Russia. Latest thing over there apparently.
Actually what I copied (and then deleted) was my "ROCK UK-EU" music folder, which, if they can recover it, should give them a fine education of English rock music from 1964 until reasonably present. Unfortunately for them though, it was the MP3 files, not the FLAC files, so they'll be missing some bottom end. Beatles, King Crimson, Yes, Jethro Tull, Sting, Supertramp, Alan Parsons Project, Mike Oldfield, Peter Gabriel, Police, Steve Winwood, Phil Collins, Genesis, Enigma, Black Sabbath, Bowie, The Corrs, Deep Purple, Roxy Music, Floyd, Bryan Ferry, Zep, Sade, Slade, Simply Red, Robert Plant, Elton, Tears for Fears, U2, Wakeman, and all sorts. Beats the hell outta whatever might pass for computer written crap they might be more familiar with.
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15th November 2018, 10:02 PM #23SENIOR MEMBER
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15th November 2018, 10:12 PM #24
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16th November 2018, 10:48 AM #25
Hope this helps.
Sent from my iPhone using Tapatalk
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16th November 2018, 08:18 PM #26GOLD MEMBER
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yup, post#7 said that
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16th November 2018, 08:26 PM #27
The last time I had to get rid of some old drives with unknown data on them I took out the framer, loaded 75mm nails and placed about 6 shots through the disks.
Good luck to anyone wanting the data off them.
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21st November 2018, 01:35 PM #28So that's how you change this field...
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It's not as hard as you think. Remove the nails in a clean room and there are techniques for recovering that data.
Repeated over-writing is still at risk of attack from statistical reconstruction after multiple reads.
The only way to truly destroy the data is physical destruction. Dismembering is one way, but the data can be reconstructed if the leftovers are read individually and the data is pieced back together.
The most effective way to destroy magnetic media is heat. Lots of it and for a long time. Once the magnetic domains are de-magnetised (by taking them above their Curie temp), there's no getting the information back. Just to be safe, I'd then dismember the drive and throw out the bits over a broad geographical area. That assumes that you don't have a heat source that can melt the platters themselves so that they can be re-cast into a funny shape like an elephant or a hand giving a rude gesture.
SSDs are way easier. The storage components melt and/or oxidise to ash in a fire. Can't get the data back if the memory elements are no longer even capable of holding themselves together, let alone data. So fire, lots of it (again).
Yes, this is the paranoid way of doing things, but if you want the most secure way....
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