gistfile1.txt

drush site-install standard --account-pass='MDRHFD' -l default --yes 
You are about to DROP all tables in your 'drupal' database. Do you want to continue? (y/n): y
No tables to drop.                                                                                                                [ok]
Starting Drupal installation. This takes a few seconds ...                                                                        [ok]
WD php: Exception: To start over, you must empty your existing database.To install to a different database, edit the appropriate  [error]
settings.php file in the sites folder.To upgrade an existing installation, proceed to the update script.View your existing site.
in install_begin_request() (line 301 of /var/www/pref63_risques-majeurs/htdocs/drupal/includes/install.core.inc).
Cannot modify header information - headers already sent by (output started at /usr/local/share/drush/includes/output.inc:37)      [warning]
bootstrap.inc:1212
Exception: <ul><li>To start over, you must empty your existing database.</li><li>To install to a different database, edit the appropriate <em>settings.php</em> file in the <em>sites</em> folder.</li><li>To upgrade an existing installation, proceed to the <a href="http://default/update.php">update script</a>.</li><li>View your <a href="http://default">existing site</a>.</li></ul> in install_begin_request() (line 301 of /var/www/pref63_risques-majeurs/htdocs/drupal/includes/install.core.inc).
Drush command terminated abnormally due to an unrecoverable error.                                                                [error]