Is whole drive encryption possible?

[graeme]

Is it possible to encrypt the entire drive? I am assuming that ecryptfs will work so I can encrypt my home directory, but would feel safer if I can encrypt everything to stop data leaking through /tmp etc.

Alternatively, any tips on how to ameliorate the risks with just /home/[me] encrypted? I thought of putting swap in zram (which i do on my desktop) anyway which solves one problem.

I have lost a tablet before... it is a risk that bothers me.