Disk and File Recovery Tools

I've used R-Studio in the past (Commercial):
http://www.r-studio.com/

But recently, I've been using TestDisk (Open Source):

http://www.cgsecurity.org/wiki/TestDisk

The best bootable USB\CD version I've found is SystemRescueCD (Open Source):

http://www.sysresccd.org

There are plenty of guides on how to use it on the site, but be careful, it can make changes to your disk that make the problems worse! If you're unsure, read the documentation and seek advice in the forums.

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