TrueCrypt creates virtual encrypted disks within a file and mount it as a real disk. It can also encrypt an entire hard disk partition or a device, such as USB memory stick, floppy disk, etc. It supports a full range of encryption algorithms, including AES-256, Blowfish (448-bit key), CAST5, Serpent (256-bit key), Triple DES, and Twofish (256-bit key). Note that 64-bit-block encryption algorithms (Blowfish, CAST-128, and Triple DES) is deprecated from V4.3 onwards. Download the installer EXE and run. Select the "Extract" option to extract files to a folder of your choice. Launch TrueCrypt.exe. For more information on the available options of running TrueCrypt in portable mode, read the section on Traveler Mode.