Moving File Directory to Other Partition
It's probably easier to simply use symlinks to point to the new folder. That way, you can leave the default settings as they are. In addition, Windows will deal with the change instead of Drupal. Move the files folder to D:/files, open a command prompt (cmd), and run the following:

C:\&gt; mklink /j "C:\xampp\htdocs\www\proyects\sites\FirstProject\files" d:\files\


Are you sure its proyects and not projects?