help migrating USR directory

["warrior sanynet ne jp" <warrior sanynet ne jp>]

Can someone give me some instructions on migrating my USR directory to
another partition. Currently, I have everything on one partition, and
that partition is 99% full. I have a spare partition on the same drive,
but I don't know the correct procedures to move it over. I'm thinking
that USR directory is pretty full and probably would be good to move
over. If thats too hard, maybe I can move the /home directories over.
Either way, I don't know the right commands to do this and safely
preserve my system.

What would be the correct procedure to migrate this over? Any help you
can give me would be greatly appreciated.

David W.