Recovery (D:)

The Recovery D partition, is to help you revert the computer back to factory conditions. What is possibly happening here is that your files you made up are being stored in that partition. The size of the partition is normally 9.99 GB in vista, of which 5.94 is taken up with the recovery files needed to restore your computer. The files need for the recovery are, Dell, Program Files, Sources, Tools, Users, Windows. If you are going to save any more files, you should store them on your C partition. When I first got my computer, by default, it was the D partition. Now if I save anything, I use C documents.