Installing Drupal

I've installed a site, and now I want to make a mobile subdomain site like this m.example.com. DB and content should be shared across both sites making mobile tools take care of what theme to display when etc. However, this problem shows up way before I get to the mobile part.

This is my sites structure

sites/all/modules
sites/default/files
sites/example.com/themes
sites/example.com/settings.php
sites/m.example.com/settings.php

I did upgrade.php. I got the following page:

A PDO database driver is required!

You need to enable the PDO_MYSQL database driver for PHP 5.2.4 or higher so that Drupal 7 can access the database.

When I look at PDO in phpinfo(), I see the following:

I am considering upgrading to Drupal 7. The doc states that D7 needs mysql PDO.

The doc does not indicate how to detect if PDO is installed and properly running.

What command can I run or where can I look to see if my MySQL 5.0.51b has PDO properly installed.

Thanks.

Hi,

I currently run a wedding insurance advice blog that runs on wordpress. The problem with wordpress is I feel limited to what I can do because I've always been a Drupal user and so much more can be done with Drupal.

I want to switch to Drupal but if possible keep all the content. Is it possible to back up the database and convert it to a drupal database?

Thanks

Hello,

using D7 I noticed a loss of performance compared to D6. I found out it might have to do with the innoDB configuration. I would like to optimize the innoDb settings but since I'm on shared hosting that might not be possible. I copied the setting as found in phpMyAdmin below.
My question is: should work D7 ok with this configuration (so the problem with the performance is somewhere else) or is it better to change back to MyISAM?
And if so, is it safe to change all the tables in D7 back to MyISAM by ALTER TABLE table ENGINE=MyISAM?

Thanks for helping me.

I don't know what I did to break this but I have an installation with 2 sites. One uses the default directory and the other uses a sites/example.com directory