Truecrypt HDD encryption and protection. | Homestead Security | Forums

http://www.truecrypt.org/

Another awesome Sourceforge project. Easy to use, I can do it, easy to setup. You can take some of the empty space on your HDD and turn it into a nearly invisible, fully encrypted HDD. I took 300Gb of my 1Tb data drive and created another drive.

It creates a file, what ever you name it, that become the new HDD. Until you mount it, it just looks like a huge file with no extention that nothing will open. When you mount it, Windows treats it as another HDD.