Tuesday, November 3, 2015

windows 7 - TrueCrypt: In-place-encryption with re-use of original drive letter possible?

I want to encrypt a non-system partition with TrueCrypt in Windows 7, and I would like to re-use the previous drive letter. Is this possible?


The TrueCrypt documentation is not really clear about this. After encrypting a non-system partition, there is a warning panel in the Volume Creation Wizard:



IMPORTANT: Please keep in mind that this volume can NOT be mounted/accessed using the drive letter E:, which is currently assigned to it!


[...]


The original drive letter E: should only be used in case you need to remove encryption from the partition/device (e.g.. if you no longer need encryption). In such a case, right-click the drive letter E: in the 'Computer' (or 'My Computer') list and select 'Format'. Otherwise, the drive letter E: should never be used (unless you remove it, as described e.g. in the TrueCrypt FAQ, and assign it to another partition/device).



The TrueCrypt FAQ describes how you remove a drive letter assignment from the original partition, which is just the way to reassing/remove a drive letter for any drive in Windows.


Apart from the warning panel of the Volume Creation Wizard, the TrueCrypt documentation does not mention that you should not "re-use" the previous drive letter.


So the question is: does anyone know if the following should work, or if there will be issues with this?



  1. Encrypt a Volume currently mapped as drive letter E:

    • E: will still appear in Windows, but look like an unformatted partition, Windows Disk Management console shows partition as RAW


  2. Mount this TrueCrypt Volume as drive letter F:

    • E: and F: will both be shown in Windows, F: will contain the data, E: will not be accessible


  3. Remove the assignment of drive letter E: from the Windows Disk Management console

  4. Re-mount the TrueCrypt volume under the (now free) drive letter E:


Thanks for any input.

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