-Start a shell as the \_postgresql user (as root run `su _postgresql -` then run the `initdb` command to initialize postgresql:
-You will need to specify pgdata directory to the default (/var/postgresql/data) with the `-D <path>` and set the user to postgres with the `-U <username>` flag. This can be done as follows:
+Create `_postgresql`'s user directory (it hasn't been created yet): `mdir var/postgresql/data`. To set it as home
+directory for user `_postgresql` run `usermod -d /var/postgresql/data _postgresql`.
+
+Start a shell as the `_postgresql` user (as root run `su _postgresql -` then run the `initdb` command to initialize postgresql.
+You will need to specify pgdata directory to the default (`/var/postgresql/data`) with the `-D <path>` and set the user to postgres with the `-U <username>` flag. This can be done as follows: