TrueCryptTrueCrypt provides free open-source disk encryptionsoftware for Windows 7/Vista/XP, Mac OS X, and Linux.It creates a virtual disk that is entirely encrypted(including file names, folder names, contents of every file,allocation tables, free space, meta data, ect.) and mountsas if it was a real disk. It can encrypt an entire partition orstorage device such as a USB flash drive or hard drive.The encryption is automatic, fast, and transparent to theuser. You can copy files and folders to and from amounted TrueCrypt volume just like you would normallydo. Keep in mind that after you drag-and-drop all yoursensitive data into your TrueCrypt volume, you shouldsecurely erase the original unencrypted files. TrueCryptdoes not save any decrypted data to a disk rather it onlystores data temporarily in RAM (memory).Go to the Internet and enter the URL www.truecrypt.orgDownload the latest version which at this writing isTrueCrypt Setup 7.1a.exe (3.3 MB) .
Follow the default installation procedures to installTrueCrypt. Start TrueCrypt and click No when asked to viewthe tutorial.The main TrueCrypt window appears.Click on the Create Volume button.
You have three options. A TrueCrypt volume can reside in a file(called a Container), in a partition or drive. A TrueCrypt containercan be moved, copied, and deleted like a normal file. Click Next.Click Next.
Click Select File…Change the directory path to your Desktop. In the file name boxenter TrueCrypt Encrypted Volume. Click Save Click Next.
Click Next.Enter 1 MB for the Volume Size. Click Next.
Read and then create and confirm a secure password.Move your mouse randomly within the Volume Creation Wizardwindow for at least 30 seconds. The longer you scribble , thebetter. This significantly increases the cryptographic strength ofthe encryption keys (which increases security). Click Format.
Create a file in Wordpad.Save as TrueCrypt Encrypted in the TrueCrypt container youcreated.
Access your container in the X: drive and open the documentTrueCrypt Encrypted. It is just as fast as opening up theunencrypted version.Important: Note that when you open a file stored on a TrueCryptvolume (or when you write/copy a file to/from the TrueCryptvolume) you will not be asked to enter the password again. Youneed to enter the correct password only when mounting thevolume.In order to close the volume and make your files inaccessibleclick Dismount.Exit.