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Data recovery question

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  #1  
Old 08-16-2007
Newcomer, in training
 
Member since: Sep 2006, 9 posts
Data recovery question

Hello,

I used to have some pictures on my NTFS file system hard drive which about 6 months ago i deleted.Ive been hearing about data recovery softwares and read abt few of them too, but i dont know how they work or do they even work.
I'll be really glad if anyone cud direct me towards a nice easy software to recover old files.pictures mostly.

Thanks alot in advance
  #2  
Old 08-16-2007
TechSpot Evangelist
 
Location: Four Corners, US
Member since: Dec 2006, 10,622 posts
They usually work by locating the file which has its first letter deleted. When you delete files, most software just removes the first letter of the named file. That then allows the file to be overwritten by succeeding files.
There are 87 different file recovery software programs that will find all these "deleted" files and recover them using a sequential letter to replace the missing first one. They will often recover what is left of a file that has been overwritten.
There are very few free versions, but you will find some on www.majorgeek.com labeled as Recovery software. The versions that cost $25 to $50 are all worth it, as they all work pretty well. They do have trial copies of some.
You do have to know or guess at the original name of the file.
  #3  
Old 08-16-2007
Newcomer, in training
 
Member since: Sep 2006, 9 posts
Thanks for replying,
I dont remember the names of the files, but i know they were all .bmp format files and also they had no alphabets, they were all long numbers :/. So isnt there any software which recovers using format rather then name ?

thanks again
  #4  
Old 08-16-2007
TechSpot Member
 
Member since: Feb 2007, 103 posts
Search on download.com

Sometimes when you delete files from the recycle bin, they go in a special folder, which you access, but NEVER see anything inside.

But, if programs/virii has deleted it then you can't get it back. Sorry.
  #5  
Old 08-17-2007
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Location: Petersburg, VA
Member since: Feb 2005, 10,005 posts
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When programs are deleted, the file space is marked in the directory by the os as available for use. It is not actually gone until overwritten or the file data is elminated (permanent deletion). Software recovery programs look for these markers and/or a series of data that makes logical sense and tries to reconstruct it. Provided the data isn't overwritten, you should be able to retrieve it.
  #6  
Old 08-17-2007
AlbertLionheart's Avatar
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Location: UKkers
Member since: Jun 2007, 2,706 posts
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I have used Easy Recovery Pro which works a treat. Not cheap, though.
By removing the first letter of the filename and replacing it with a ~ (I think!) the system can re-use the space allocated to that file. Easy Recovery lists all the files by file type and will recover each one as requested.
Go to www.ontrack.co.uk or .com for more info.
  #7  
Old 08-18-2007
TechSpot Evangelist
 
Location: Four Corners, US
Member since: Dec 2006, 10,622 posts
Ok, I'll re-word it... they remove the first digit, replacing it with a generic or code digit... so you know a digit has been changed... when they know for sure, they will usually rename the entire file as they recover it.
  #8  
Old 08-18-2007
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Location: Southern Calif.
Member since: Apr 2005, 10,832 posts
>which about 6 months ago i deleted

forget it -- it's been over written and clobbered by now.
  #9  
Old 08-19-2007
AlbertLionheart's Avatar
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Location: UKkers
Member since: Jun 2007, 2,706 posts
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You would be amazed at what you can recover. I recovered a load of porn for a divorce case when the drive had been reformatted twice.
  #10  
Old 08-19-2007
Tedster's Avatar
Techspot old timer.....
 
Location: Petersburg, VA
Member since: Feb 2005, 10,005 posts
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if you don't do a secure wipe (like a government wipe), then data can be recovered even if overwritten sometimes with sophisitcated software.

rule of thumb, WIPE your hard drive or physically destroy it if getting rid of it.
  #11  
Old 08-22-2008
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Member since: Aug 2008, 12 posts
can you suggest any softwares that can do a "secure wipe"
  #12  
Old 08-22-2008
AlbertLionheart's Avatar
TechSpot Chancellor
 
Location: UKkers
Member since: Jun 2007, 2,706 posts
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The Windows format does not render files unrecoverable but I have never been able to get files back from a drive that has been formatted using the manufacturer's low level format tool. There are however risks associated with this as it can trash a drive altogether.
  #13  
Old 08-22-2008
jobeard's Avatar
TechSpot Ambassador
 
Location: Southern Calif.
Member since: Apr 2005, 10,832 posts
Convert from Fat32 to NTFS does not lose data.
However EVERY true formatting of a partition, or the delete, redefine of a partition
(which then forces a reformat) certainly destroys the data.
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