[ubuntu] File Recovery

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http://ubuntuforums.org – Could someone please help me recover my lost files. I accidently deleted them ( from the recycle bin too ) I am running dual boot with windows 7 i believe, and i have tried the testdisk and undelete process. neither have seemed to work for me. i lost about 200Gb of audio and videos. I believe that my main problem is that i didnt use the system partition to store all those files. i used a seperate partition, now i can only recover temporary files. any help? (Hardware)