I am using BACTRACK 5R1 live on USB.

I have followed instructions at http://www.binbert.com/blog/2011/06/how-to-install-tor-on-backtrack-5/ to install tor on it.

Everything is installed and running, but when I boot to use BACKTRACK another day everything vanishes (I am mean all the installations and settings that were made according to the instructions).

I have to install again by following the same instruction.
Are these instruction not meant for USB media?
How can I install TOR permanently?