How do I recover partitions and data from a flash drive?

I have a 32GB Corsair Survivor Flash Drive. A while ago I've used chkdsk (with fix option)  on my Vista machine to check for any bad sectors and fix them if possible. The scan failed and gave me a fatal error message of some sort (cannot remeber the content of it.) The effect of this error was first, Windows recognizing it as an 900MB unformatted drive and soon after that it would only show an unaccessible removable drive of 0MB capacity. When I try to open it Explorer crashes. When I try to chkdsk or format it it simply says its inaccessible. MacOS does not detect it at all. I had some important files on there which I want to recover. How can I recover the partition? Or if data recovery is possible without partition recovery, how would I o about that? I dont want to give my flash to a data recovery service if there is a way of recovering this data. I'll give Linux a go as well.
KeniteAsked:
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CDCCtechCommented:
I use Active@ partition recovery, but it is not free. You might try http://www.cgsecurity.org/wiki/TestDisk it is open source.
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noxchoGlobal Support CoordinatorCommented:
Did you try to scan it with GetDataBack by www.runtime.org 
If not then try.
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nobusCommented:
you cna try these free tools :
http://www.handyrecovery.com/            handy recovery
http://drivers.softpedia.com/get/Other-DRIVERS-TOOLS/Others/Sony-EzRecover.shtml                EZrecover
http://www.snapfiles.com/download/dlsmartrecovery.html                  usb key recovery FREE

http://www.pcinspector.de/file_recovery/UK/welcome.htm      pc Inspector -FREE -
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CDCCtechCommented:
Just wanted to add that you need to attempt to clone it first. DDrescue would be the way to go with that. Best to stop plugging it into a windows machine until you have a clone. Also, recovery of files without indexes by their signatures is very unreliable, so I would attempt the partition recovery first.
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btanExec ConsultantCommented:
You can get some good references in the Corsair forum, check the below relevant:
@ http://forum.corsair.com/v3/showthread.php?t=76976
@ http://forum.corsair.com/v3/showthread.php?t=85272

I see that vendor may be willing to do a replacement but I believe you may have some concern on the data in the drive. But they did suggest an article that you can try out. See section on "Helpful Windows Software Tools" and "Common Data Loss and/or Data Corruption Issues".
@ http://www.corsair.com/_appnotes/AN803_CommonIssues_HelpfulTips_DLoss_DCorruption.pdf

There are some software shared which some are already highlighted here.  The article is referencing to Runtime's Diskexplorer. My thoughts is as long as OS can identify the disk although it states as unformatted, the s/w means may still stand a chance.

If it is really hardware fault, data recovery expertise is needed. In case you need, you can check out the link @ http://www.recovermyflashdrive.com/flash-drive/corsair
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eliuhaCommented:
Generally, it might me impossible to recover it with software tools.

If all of above fails, and it might , because of the physical structure of the flash memory, the only way to recover the data would be a chip off and then data reconstruction. Find yourself a local data recovery company

I can recommend one in Israel. contact me if you want it.

*email address removed*
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btanExec ConsultantCommented:
There are already alternative to recover the partition and data. Pls give the recognition to all experts.
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nobusCommented:
btan - why waste comments on a guy that walked away? he never gave ANY feedback
and the Q is 6 years old...lol
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btanExec ConsultantCommented:
agree. Sigh but the expert contributed and wasted their advices
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