Hey there, the syntax you are using is correct if you want to place the 21/22 2gib files on the
drive that you are running BT from.
Just out of inteterest, you are not trying to save on an external drive are you and mistakenly using
-o START instead of -o /media/mydrive/START for instance are you ?
I have to admit that I have never attempted to create a 43gig wordlist.. so can really help you with
what may be causing the problem.
Hopefully bofh28 will see this post (he will) and hppe he may be able to advise what the possible cause may be.