Today i had to migrate my civicrm installation from an old server to a new server
On the new server i found an existing drupal and civicrm ready. So i tried to proceed as in this guide
What i did is after copying my drupal and civi project after that i took the existing drupal Civi installation and started editing the civicrm.setting and setting.php based on the credentials they gived to me. After that i imported the databases from my old installation and removed the mentionned cache files. I stopped at step 13 cause i wasn't able to access any url related to Civicrm (drupal is working). Each time i get a screen similar to this.