Thanks to Martin A. Marques <martin@math.unl.edu.ar> for the tip.
these commands while logged in to the special database user account
(which you already have if you are upgrading).
<programlisting>
-<userinput>/usr/local/pgsql/bin/initdb -D /usr/local/pgsql/bin</>
-<userinput>/usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/bin</>
+<userinput>/usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data</>
+<userinput>/usr/local/pgsql/bin/postmaster -D /usr/local/pgsql/data</>
</programlisting>
Finally, restore your data with
<screen>