How to recover TrueCrypt datas

I would suggest you attempt adding your mounts to your fstab. It can be found at /etc/fstab on most systems.

fstab will allow you to restrict who has access and who can mount which devices to which mount points. The option you are looking for will most likely be uid. You can determine a user's UID by examining /etc/passwd. Typically, you will be using uid 1000 as the first user created on the system.

sshfs#server.local:/mnt/Mountpoint /mnt/LocalDir fuse comment=sshfs,noauto,users,exec,uid=1000,gid=1000,allow_other,reconnect,transform_symlinks,BatchMode=yes,IdentityFile=/home/me/.ssh/server 0 0

This example shows how I mount a remote filesystem locally using sshfs. I have restricted it so that only my user is allowed to do such a thing. There are additional options in this sshfs example that you will most likely not need, but I think if you take a look it might clear things up.

further reading

Mount TrueCrypt volumes as a normal user

tl;dr

Set up uid and even guid in your fstab to restrict access to certain users. This will restrict mounting/unmounting as well as file access if set up correctly. Also, investigate whether or not you are utilizing FUSE, as that can cause additional conflict.

This is the relevant section of the TrueCrypt website: http://www.truecrypt.org/docs/hidden-volume-protection

It says you can 'protect' the inner volume against damage that would otherwise be likely to occur if you ever write to the outer volume after you create the inner volume.

I tried following the instructions on that page, though, and it did not work for me.

(This was after copying around 200 GiB to an outer volume I wanted to use for back-ups. For me that seems to have been mostly a waste of time, unless I can figure out what I am missing about the instructions on that page.)