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Possible Duplicate:
All files erased after installing Ubuntu 11.04 alpha 3
Recovering Very Important Lost Data From Ntfs Partition

How to recover entire hard disk lost while installing the ubuntu, I chose the option replace ubuntu in windows 7 and formatted the entire disk.

And lost the all file how to recover all files in windows 7?

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marked as duplicate by psusi, Luis Alvarado, stephenmyall, Jorge Castro, Takkat Nov 13 '12 at 15:11

This question was marked as an exact duplicate of an existing question.

You can try TestDisk Utility . Is a power tool that (sometimes) can recover entire partitions. You can install it in Ubuntu with this command in terminal

sudo apt-get install testdisk

The other good utility is foremost

Either way you should definitely read this => Data Recovery - Ubuntu Community Wiki

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