![]() Furthermore, if data is written to a dynamic volume when there is not enough free space in its host file system, the encrypted file system may get corrupted. Dynamic (sparse-file-hosted) VeraCrypt volumes are also less secure, because it is possible to tell which volume sectors are WARNING: Performance of dynamic (sparse-file-hosted) VeraCrypt volumes is significantly worse than performance of regular volumes. Properties and see the Size on disk value. ![]() Space it uses), right-click the container file (in a Windows Explorer window, not in VeraCrypt), then select To find out current physical size of the container (actual disk Note that the size of a dynamic (sparse-file-hosted) VeraCrypt volume reported by Windows and by VeraCrypt will always be equal to its maximum size (which you specify when creating the volume). If you are creating a container in the FAT file system, the option Note that sparse files can only be created in the NTFS file system. After the maximum specified size is reached, the physical size of the container will remain constant. Increase up to the maximum value that is specified by the user during the volume creation process. The physical size of the container can only Note that the physical size of the container (actual disk space that the container uses) will not decrease whenįiles are deleted on the VeraCrypt volume. ![]() Dynamicĭynamic VeraCrypt container is a pre-allocated NTFS sparse file whose physical size (actual disk space used) grows as new data is added to it. Important: When encrypting a partition/device within which you intend to create a hidden volume afterwards, leave this option unchecked. Note that Quick Format can only be enabled when encrypting partitions/devices. If you are not sure whether to enable or disable Quick Format, we recommend that you leave this option unchecked. Quick format is much faster but may be less secure because until the whole volume has been filled with files, it may be possible to tell how much data it contains (if the space was not filled with random data beforehand). This means that the new volume will beĮntirely filled with random data. If unchecked, each sector of the new volume will be formatted. For more information, please see the chapter Note that the encryption algorithm cannot be changed after the volume is created. This allows you to select the encryption algorithm with which your new volume will be encrypted. For more information, please refer to the chapter Note that the output of a hash function is never used directly as an encryption key. Header Key Derivation, Salt, and Iteration Count).įor information about the implemented hash algorithms, see the chapter Hash Algorithms. It is also used in deriving the new volume header key and secondary header key (see the section Please see the section Random Number Generator). The selected hash algorithm is used by the random number generator (as a pseudorandom mixing function), which generates the master key, secondary key (XTS mode), and salt (for more information, However, several items deserve further explanation: Hash AlgorithmĪllows you to select which hash algorithm VeraCrypt will use. The Wizard provides help and information necessary to successfully create a new VeraCrypt volume. The collected data, which should be as random as possible, include your mouse movements, key presses, and other values obtainedįrom the system (for more information, please see the section Random Number Generator). It starts collecting data that will be used in generating the master key, secondary key (XTS mode), and salt, for the new volume. VeraCrypt Volume Creation Wizard should appear. To create a new VeraCrypt file-hosted volume or to encrypt a partition/device (requires administrator privileges), click on ‘Create Volume’ in the main program window.
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