Method #1: Encrypt a Part of the USB
If you have very sensitive data and simple password protection is not enough, you can also encrypt a separate partition in a USB drive and add all important data in that partition. This way, you can easily access all your unprotected data without any need of a password, and access the important data just enter the password.
For this purpose, Rohos Mini drive does a remarkable job. It comes with both free and paid versions and free version offers encrypted partition up to 8GB. 8GB space is more than enough for many people, but you will have to opt for the paid version if you need more space.
Download and install Rohos and launch the program, in the main menu, click on “Encrypt USB Drive”.
A dialog will open up with all the properties of the new partition that will be created. To change the properties, click on “change” at the end of the properties and you will see the customization options in another window.
Method #2: Encrypt the Whole Drive
If you would like to encrypt the whole drive, then it can be done easily. For this purpose, we are going to use the tool DiskCryptor. It is a free to use open source tool that has a really simple interface.
You can also use Microsoft’s BitLocker to encrypt your USB drive, but it is quite complex and only supports Ultimate and Enterprise versions of Windows 7 and above. We selected DiskCryptor due to its easy use and compatibility with Windows 2000 and above.
Download DiskCryptor and install the program. When launched, you will see not very attractive interface, but it will be simple. To start encrypting, click on the USB drive from the interface and then click on “Encrypt”.