Portability is controlled by three functions. When a new password is entered the first time a memory device is used, a checkbox selection enables or disables making the drive portable. On the Tools menu are two commands. One performs the copies to make a drive portable and one to remove the files that make the drive protable.

To make a drive portable, a limited version of CyrptoFD is copied to the base (root) directory when you enter a new password. A second file, autorun.inf is also copied to the device. When mounting the device on a different computer, the autorun file executes CryptoFD. When executing on a computer from a portable device, CryptoFD will only allow file decryption.

Some computers disable the autorun feature. In order to execute CryptoFD on these computers, use Windows Explorer or the Start Menu Run command.

To use the Run command, select the Browse option and navigate to the root directory of the mounted device. Select CryptoFD.exe and click Open. You should see something similar to D:\CryptoFD.exe in the Run command window. Select OK to run CryptoFD.

To use Windows Explorer, navigate by selecting Computer and then the Device drive letter. Double click on CryptoFD.exe.