Create a "files" directory for uploads

After installing Drupal, it is helpful to have a writable directory so that you can upload your own content files. If you skip this step, you may get an error message stating that "sites/default/files does not exist ..."

Here’s how:

1. Making a directory called 'files' in the sites/default folder.
2. Assign write permissions to it with the following command (from the installation directory):

or

Also, most FTP programs allow you to create the files directory and set its permissions. Be sure to give read, write, and execute permissions to everyone (777). FYI: chmod a+rwx is equivalent to chmod 777