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Portable Mode
TrueCrypt can run in so-called portable mode, which means that it does not
have to be installed on
the operating system under which it is run. However, there are two things to keep in mind:
1) You need administrator privileges in order to be able to run TrueCrypt in portable mode (for
the reasons, see the chapter
Using TrueCrypt Without Administrator Privileges
).
Note: No matter what
kind of software you use, as regards personal privacy in most
cases, it is
not
safe to work with sensitive data under systems where you do not have
administrator privileges, as the administrator can easily capture
and copy your
sensitive data, including passwords and keys.
2) After examining the registry file, it may be possible to tell that TrueCrypt was run (and that a
TrueCrypt volume was mounted) on a Windows system even if
it had been run in portable
mode.
Note
: If that is a problem, see
this question
in the FAQ for a possible solution
.
There are two ways to run TrueCrypt in portable mode:
1) After you extract files from the TrueCrypt
self-extracting package, you can directly run
TrueCrypt.exe
.
Note: To extract files from the TrueCrypt self-extracting package, run it, and then select
Extract
(instead of
Install
) on the second page of the TrueCrypt Setup wizard.
2) You can use the
Traveler Disk Setup
facility to prepare a special traveler disk and
launch
TrueCrypt from there.
The second option has several advantages, which are described in the following sections in this
chapter.
Note: When running in ‘portable’ mode, the TrueCrypt driver is unloaded when it is no longer needed (e.g.,
when all instances of the main application and/or of the Volume Creation Wizard are closed and no
TrueCrypt volumes are mounted). However, if you force dismount on a TrueCrypt volume when TrueCrypt
runs in portable mode, or mount a writable NTFS-formatted volume on Windows Vista or later, the TrueCrypt
driver may
not
be unloaded when you exit TrueCrypt (it will be unloaded only when you shut down or restart
the system). This prevents various problems caused by a bug in Windows (for instance, it would be
impossible to start TrueCrypt again as long as there are applications using the dismounted volume).
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