recover data after formatting

One of my hard drive was formatted, Is there a free tool that would allow me to recover

See here for some suggestions : http://forums.techarena.in/hardware-...als/363826.htm
http://forums.techarena.in/hardware-...ls/1049221.htm
http://forums.techarena.in/hardware-...als/486684.htm
http://forums.techarena.in/operating-systems/683433.htm

if it does not work, I suggest you File Scavenger but paying much more efficient.

The software is dangerous, you can definitely lose everything, even experts can not recover your lost data.