I am aware of PGP, and yes, one could do that, but... a) While I am not afraid of reading docuzmentation, TrueCrypt has always struck me as being really, really

I am aware of PGP, and yes, one could do that, but... a) While I am not afraid of reading docuzmentation, TrueCrypt has always struck me as being really, really simple to use. b) The whole point of an encrypted filesystem is that cleartext data never hits the disk/flash drive/whatever. Of course you can prepare your data, encrypt it with gpg, transmit it in whatever way you choose, then decrypt it. But then you have on-disk plain text data, which in some cases is just not desirable. Just to be clear, I appreciate your suggestion, and in many cases it is entirely sufficient. But for me, right now, TrueCrypt hits kind of a sweet spot in terms of portablity, convenience and security.