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Does running two different hard drive recovery softwares (Recuva, TestDisk etc) hamper any chances of data recovery. Its probably not as I don't think they'd be doing any writing at all. But just to be sure, does it reduce my chances of recovery at all?

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up vote 7 down vote accepted

It may not, but you're going to thrash the drive with the constant reads and in turn will slow both pieces of software down. Why not try one, then the other?

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Exactly. I expect there's a pretty good chance that Recuva will be looking at one end of the disk whilst TestDisk is looking at the other, the disk heads will be constantly thrashing back and forth between the two areas under scrutiny. Consequently I expect there's a good chance that running concurrently will take much longer than running consecutively. –  RedGrittyBrick Jun 17 '11 at 22:59
    
And if this drive is being recovered because you have hardware failure issues, it will probably expire under the abuse, negating the very reason you're trying to run the software in the first place. –  Fiasco Labs Sep 10 '13 at 14:38
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