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Command Line Usage
Note that this section applies to the Windows version of TrueCrypt. For information on command line usage applying to the Linux and Mac OS X versions, please run: truecrypt ***8211;h
/help or /?

Display command line help.
/volume or /v

File and path name of a TrueCrypt volume to mount (do not use when dismounting). To mount a hard disk partition, use, for example, /v \Device\Harddisk1\Partition3 (to determine the path to a partition, run TrueCrypt and click Select Device). Note that device paths are case-sensitive.
/letter or /l

Driver letter to mount the volume as. When /l is omitted and when /a is used, the first free drive letter is used.
/explore or /e

Open an Explorer window after a volume has been mounted.
/beep or /b

Beep after a volume has been successfully mounted or dismounted.
/auto or /a

If no parameter is specified, automatically mount the volume. If devices is specified as the parameter (e.g., /a devices), auto-mount all currently accessible device/partition-hosted TrueCrypt volumes. If favorites is specified as the parameter, auto-mount favorite volumes. Note that /auto is implicit if /quit and /volume are specified.
/dismount or /d

Dismount volume specified by drive letter (e.g., /d x). When no drive letter is specified, dismounts all currently mounted TrueCrypt volumes.
/force or /f

Forces dismount (if the volume to be dismounted contains files being used by the system or an application) and forces mounting in shared mode (i.e., without exclusive access).
/keyfile or /k

Specifies a keyfile or a keyfile search path. For multiple keyfiles, specify e.g.:
/k c:\keyfile1.dat /k d:\KeyfileFolder /k c:\kf2
/cache or /c

y or no parameter: enable password cache; n: disable password cache (e.g., /c n). Note that turning the password cache off will not clear it (use /w to clear the password cache).
/history or /h

y or no parameter: enables saving history of mounted volumes; n: disables saving history of mounted volumes (e.g., /h n).
/wipecache or /w

Wipes any passwords cached in the driver memory.
/password or /p

The volume password. If the password contains spaces, it must be enclosed in quotation marks (e.g., /p "My Password"). Use /p "" to specify an empty password. Warning: This method of entering a volume password may be insecure, for example, when an unencrypted command prompt history log is being saved to unencrypted disk.
/quit or /q

Automatically perform requested actions and exit (main TrueCrypt window will not be displayed). If preferences is specified as the parameter (e.g.,
/q preferences), then program settings are loaded/saved and they override settings specified on the command line.
/q background launches the TrueCrypt Background Task (tray icon). Note that /q has no effect if the container is accessible only in local user name space (TrueCrypt will exit only after the volume is dismounted), e.g., a network volume.
/silent or /s

If /q is specified, suppresses interaction with the user (prompts, error messages, warnings, etc.). If /q is not specified, this option has no effect.
/mountoption or /m

ro or readonly: Mount volume as read-only.
rm or removable: Mount volume as removable medium.
ts or timestamp: Do not preserve container timestamps
sm or system: Without pre-boot authentication, mount a partition that is within the key scope of system encryption (for example, a partition located on the encrypted system drive of another operating system that is not running). Useful e.g. for backup or repair operations.
Note: If you supply a password as a parameter of /p, make sure that the password has been typed using the standard US keyboard layout (in contrast, the GUI ensures this automatically).
bk or headerbak: Mount volume using embedded backup header.
Note: All volumes created by TrueCrypt 6.0 or later contain an embedded backup header (located at the end of the volume).
Example: /m ro. To specify multiple mount options, use e.g.: /m rm /m ts
TrueCrypt Format.exe (TrueCrypt Volume Creation Wizard):
/noisocheck or /n

Do not verify that TrueCrypt Rescue Disks are correctly burned. This can be useful e.g. in corporate environments where it may be more convenient to maintain a central repository of ISO images rather than a repository of CDs or DVDs. WARNING: Never attempt to use this option to facilitate the reuse of a previously created TrueCrypt Rescue Disk. Note that every time you encrypt a system partition/drive, you must create a new TrueCrypt Rescue Disk even if you use the same password. A previously created TrueCrypt Rescue Disk cannot be reused because it was created for a different master key.
Syntax
TrueCrypt.exe [/a [devices|favorites]] [/b] [/c [y|n]] [/d [drive letter]] [/e] [/f] [/h [y|n]] [/k keyfile or search path] [/l drive letter] [/m {rm|ro|sm|ts}] [/p password] [/q [background|preferences]] [/s] [/v volume] [/w]
"TrueCrypt Format.exe" [/n]
Note that the order in which options are specified does not matter.
Examples
Mount the volume d:\ myvolume as the first free drive letter, using the password prompt (the main program window will not be displayed):
truecrypt /q /v d:\myvolume
Dismount a volume mounted as the drive letter X (the main program window will not be displayed):
truecrypt /q /dx
Mount a volume called myvolume.tc using the password MyPassword, as the drive letter X. TrueCrypt will open an explorer window and beep, mounting will be automatic:
truecrypt /v myvolume.tc /lx /a /p MyPassword /e /b

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