Version Information

Keyfile Search Path 
By adding a folder in the keyfile dialog window (click Add Path), you specify a keyfile search path. 
All files found in the keyfile search path
*
will be used as keyfiles.
Important: Note that folders (and files they contain) found in keyfile search paths are 
ignored.
Keyfile search paths are especially useful if you, for example, store keyfiles on a USB memory 
stick that you carry with you. You can set the drive letter of the USB memory stick as a default 
keyfile search path. To do so, select Settings -> Default Keyfiles. Then click
Add Path, browse to the drive letter assigned to the USB memory stick, and click OK. Now each 
time you mount a volume (and if the option Use keyfiles is checked in the password dialog 
window), TrueCrypt will scan the path and use all files that it finds on the USB memory stick as 
keyfiles.
WARNING: When you add a folder (as opposed to a file) to the list of keyfiles, only the 
path is remembered, not the filenames! This means e.g. that if you create a new file in 
the folder or if you copy an additional file to the folder, then all volumes that used 
keyfiles from the folder will be impossible to mount (until you remove the newly added 
file from the folder). 
Empty Password & Keyfile 
When a keyfile is used, the password may be empty, so the keyfile may become the only item 
necessary to mount the volume (which we do not recommend). If default keyfiles are set and 
enabled when mounting a volume, then before prompting for a password, TrueCrypt first 
automatically attempts to mount using an empty password plus default keyfiles (however, this does 
not apply to the ‘Auto-Mount Devices’ function). If you need to set Mount Options (e.g., mount as 
read-only, protect hidden volume etc.) for a volume being mounted this way, hold down the Control 
(Ctrl) key while clicking Mount (or select Mount with Options from the Volumes menu). This will 
open the Mount Options dialog.