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 Post subject: Recover overwritten files
PostPosted: March 25th, 2015, 11:30 
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Joined: March 24th, 2015, 13:51
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Location: Bucharest
I heard many rumors saying that some experts could actually recover overwritten files. Is that true? If not can someone explain a bit or post an external link to a similar topic please?


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 Post subject: Re: Recover overwritten files
PostPosted: March 25th, 2015, 12:15 
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Joined: April 3rd, 2011, 0:19
Posts: 2003
Location: Providence, RI
No it's not possible. It's based on a flawed theory by a man named Peter Guttmann who claimed that using MFM it would be possible. But, it's been proven wrong a thousand times.

This article explains more: http://www.data-medics.com/is-data-ever ... -gone.html

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 Post subject: Re: Recover overwritten files
PostPosted: March 25th, 2015, 14:17 
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Joined: February 9th, 2009, 16:13
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Location: Ontario, Canada
Are you sure? I thought this was one of the features of HDDRegenerator and SpinRite.

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 Post subject: Re: Recover overwritten files
PostPosted: March 25th, 2015, 18:12 
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Joined: April 26th, 2012, 1:52
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Location: Chicago, USA
Ohh I'm certainly certain.


In the old days of low density drives, 10MB, with band positioners, there was slack and sometimes the head never fully erased a track. It was those remnants that the experts retrieved.

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 Post subject: Re: Recover overwritten files
PostPosted: April 18th, 2015, 20:53 
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Joined: April 18th, 2015, 20:22
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Location: Shortston
When I try to recover a file that I've overwritten, recuva says it's recoverable and it's green. When I recover it (it's a pass protected rar file), I can't open it. Says file is damaged. Is there a way around that?


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 Post subject: Re: Recover overwritten files
PostPosted: April 20th, 2015, 6:04 
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Joined: April 18th, 2015, 20:22
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Location: Shortston
Spildit wrote:
TKA9 wrote:
When I try to recover a file that I've overwritten, recuva says it's recoverable and it's green. When I recover it (it's a pass protected rar file), I can't open it. Says file is damaged. Is there a way around that?


The only known way to get arround that at the moment is to copy the file that you over-writen back to the drive from your backup copy.

If it's over-written you can't recover it any longer from the original drive where the file was. You will only recover the data that is now present on the same sectors the old file used to be. That data will be retrieved by recuva and wouldn't be on any use.

Could you explain that part a bit further? Some of the files were on a flash drive, others were on the hard disk. I've done an overwrite on both quite some time ago. I don't have backups but I need the files again.


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 Post subject: Re: Recover overwritten files
PostPosted: April 21st, 2015, 6:41 
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Joined: April 18th, 2015, 20:22
Posts: 23
Location: Shortston
Spildit wrote:
TKA9 wrote:
Spildit wrote:
TKA9 wrote:
When I try to recover a file that I've overwritten, recuva says it's recoverable and it's green. When I recover it (it's a pass protected rar file), I can't open it. Says file is damaged. Is there a way around that?


The only known way to get arround that at the moment is to copy the file that you over-writen back to the drive from your backup copy.

If it's over-written you can't recover it any longer from the original drive where the file was. You will only recover the data that is now present on the same sectors the old file used to be. That data will be retrieved by recuva and wouldn't be on any use.

Could you explain that part a bit further? Some of the files were on a flash drive, others were on the hard disk. I've done an overwrite on both quite some time ago. I don't have backups but I need the files again.


If you have over-written the original files and you don't have a backup then they are gone ... And you can't recover them. Sorry.

Okay thanks. Thought there was a workaround. I'm sure there is but it's too complicated.


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