I have PostgreSQL 9.0.4-1 running as a service on Windows XP Home Edition, with the command line of the service being: D:\me\usr\PostgreSQL\bin/pg_ctl.exe runservice -N "pgsql" -D "d:/me/etc/PostgreSQL" In the postgresql.conf file I have the following settings: data_directory = '../../data/PostgreSQL' external_pid_file = '../../var/run/PostgreSQL.pid' log_directory = '../../var/log/PostgreSQL' In this configuration the PostgreSQL service fails to start with the message: FATAL: data directory "C:/WINDOWS/system32/../../data/PostgreSQL" does not exist If using an absolute path for data_directory like this: data_directory = 'd:/me/data/PostgreSQL' then the service starts ok, with the curent directory of pg_ctl.exe being C:\WINDOWS\system32\, while the pid file and the logs are set to the desired location. I can confirm this behavior by running postgres.exe from the console, and for relative paths the data_directory is relative to the current folder from where postgres.exe is launched, and both external_pid_file and log_directory are relative to the directory specified with the -D option of the command line. For the record, there is no PGDATA environment variable defined. Have a nice day, Eduard -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general