USB Memory Stick Protection

１．Donwload and install TrueCrypt 6.0a（Free, no evaluation time limit. Better than "cryptainer", as there is no container size limitation and encyrption of 256bit is possible)

http://www.truecrypt.org/downloads.php

２．Format the USB disk by using NTFS (to enable format as NTFS, go to control panel, device manager, the USB drive in question, properties, policy, tick optimise performance. Reset this back to normal after steps 6 below)

３．Copy the following three files from the computer installed with TrueCrypt into the root of the USB disk

TrueCrypt Format.exe
TrueCrypt.exe
truecrypt.sys

４．Run TrueCrypt Format.exe. Create a file container. Choose Standard TrueCrypt Volume. Give a name to the file container (e.g. test). Choose an encryption algorithm you like (the more complicated it is, the slower the encryption and decryption process). Choose any hash algorithm you like. Set most, but not all of the USB disk sizeas volume size (maximum 4GB on an FAT32 file system). Do not use keyfile. Format the volume as FAT.

５．Creata a file named mount.bat inside the root of the USB disk containing the following line of command.

TrueCrypt /q /v test /l X /m rm /e

(test being the name of the file container. X being the drive letter you intend to use after mounting the volume)

６．Create a file named unmount.bat inside the root of the USB disk containing the following lines of command.

TrueCrypt /d /q

７．Daily Operation: After insertion of USB stick into any PC, run mount.bat to mount the file container (input of password required) as a drive letter, then create and move files into the mounted drive as usual. After use, run unmount.bat to unmount the drive and use the built-in eject function before actual removal.

In fact, TrueCrypt can be used to create encrypted volumn on any internal or external harddisk.