DISK RECOVERY
Today I tried a very nice opensource tool
http://www.cgsecurity.org/wiki/TestDisk
It is simple portable, well documented. Some of its features
Fix partition table, recover deleted partition
Recover FAT32 boot sector from its backup
Rebuild FAT12/FAT16/FAT32 boot sector
Fix FAT tables
Rebuild NTFS boot sector
Recover NTFS boot sector from its backup
Fix MFT using MFT mirror
Locate ext2/ext3 Backup SuperBlock
Undelete files from FAT, NTFS and ext2 filesystem
Copy files from deleted FAT, NTFS and ext2/ext3 partitions."