Do you have some files or data on your computer that is personal and valuable, and you are always worrying that somebody might look at it and use it. You might have tried many other tools and software to protect.
You might have some fear when you keep some very personal data on you office computer. I am sure we always runs the risk when we give our computer to tech support guy when something goes wrong.
Truecrypt software solves all of such issue.
It can encrypt entire hard disk or USB drive.
It can encrypt some part of your hard disk and you can soft mount is as additional drive.
All data encryption happens realtime, on the fly and transparent.
It even takes care of situation where an adversary forces you to reveal the password.
TrueCrypt never saves any decrypted data to a disk drive ,only stores the data temporarily in memory. Even when the volume is mounted, data is still encrypted. When you restart Windows, the volume will be dismounted and files stored in it will be inaccessible . To make them accessible again, you have to mount the volume (and provide the correct password and/or keyfile ).
Available for Windows, Mac and Linux. Can be download and used for free.