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chris@vostro1710:~/dev/mialanes$ drush si standard --account-name=superadmin --db-url="mysql://mialanes:mialanes@localhost/mialanes"
You are about to create a sites/default/settings.php file and DROP all tables in your 'mialanes' 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: PHP extensions: Disabled                                                                                                 [error]

Drupal requires you to enable the PHP extensions in the following list (see the system requirements page for more information):gd
 in install_verify_requirements() (line 753 of /home/chris/dev/mialanes/includes/install.core.inc).
WD php: Warning: Cannot modify header information - headers already sent by (output started at /usr/share/drush/includes/output.inc:38) in  [warning]
drupal_send_headers() (line 1216 of /home/chris/dev/mialanes/includes/bootstrap.inc).
Exception: PHP extensions: Disabled

Drupal requires you to enable the PHP extensions in the following list (see the <a href="http://drupal.org/requirements">system requirements page</a> for more information):<div class="item-list"><ul><li class="first last">gd</li>
</ul></div> in install_verify_requirements() (line 753 of /home/chris/dev/mialanes/includes/install.core.inc).
Drush command terminated abnormally due to an unrecoverable error.