Every link except home directes to 'Not found' page?
You are missing (or having a malformed) htaccess file.

You can download a .htaccess file directly from drupal.org with the following link: https://raw.githubusercontent.com/drupal/drupal/8.2.x/.htaccess

If you want an htaccess file for a different disk version then you can change the version number in the above link.