Don Patou <pknoob@noos.fr> writes:
> When I start postmaster it says it can't cd
> to /var/lib/postgres which indeed doesn't exists. Do I need to create all
> them myself or did I miss something?
You didn't run initdb. See chapter three of the Admin Guide:
http://www.ca.postgresql.org/users-lounge/docs/7.3/postgres/runtime.html
regards, tom lane