How to resize TrueCrypt volumes with Extcv
There are a lot of people or organization using TrueCrypt (which is free) as the defacto files or partition encryption.

The problem most faced is: How do you resize the truecrypt file or volume once you have created the size in the setup?
ExtCV seems to be the answer. [Download here >>]
ghacks.net have a coverage on ExtCV:
I have reviewed the open source tool Extcv back in July and came to the conclusion that it offered TrueCrypt users an elegant and unobtrusive option to resize the TrueCrypt volume on the fly. The biggest problem back then was that the software was only compatible up to TrueCryt 6, and incompatible with TrueCrypt 7 which had been available for some time back then.
Users who work with TrueCrypt containers need to specify a container size during creation. TrueCrypt itself does not offer to change the size of the container once it has been created, which can be a problem if the space of the container runs low. Your only options? Delete data in the container or create a new larger container and move the data from the old into the new. That takes time and is not the best option, especially if the container is not hosted locally.
So, Extcv offers another possibility. The software can manipulate the size of TrueCrypt containers on the fly so that they can be expanded if necessary.

I have encounter numerous cases where I need to increase my volume’s size. this tool will be very useful!
