There is a problem with plausible deniability of TrueCrypt / VeraCrypt which bothers me for quite some time. Since the software must not show any hints about whether a hidden volume exists inside the main volume, how can it decide, how much free disk space is available in the main volume?
- Does it just override the content of the hidden volume, when we store too many data in the main volume?
- Does the size of the hidden volume change dynamically, when we store more files in the main volume?