Currently, I am encrypting an external USB drive with TrueCrypt 6.2 under Ubuntu 9.04. First, the outer volume is beeing formatted:
Later, I will have to create the hidden volume. I will use the hidden volume for backup of my KeePassX database. The database has a size of about 100 KB (a traditional floppy disk has 1.44 MB) – so it is pretty small. Since the database itself is encrypted (password and keyfile are needed to decrypt it), I have very high security. In the outer volume of the external USB hard drive that I am momentarily encrypting, a backup of files from an Win XP computer will be stored. I hope that this will work. I am not totally sure because I don’t know the file format TrueCrypt is encrypting the external hard drive with. It might be possible that Win XP doesn’t recognize ext3 if it is used. I will see.