If Photoshop crashes or you notice that the scratch disk is full, you can empty it by following these steps:
1. Quit Photoshop.
PRO TIP: If you are using Photoshop, it is important to regularly empty the scratch disk to ensure that the program is running smoothly. Failure to do so can result in crashes and data loss.
2. In the Windows Start menu, choose “All Programs” and then “Adobe Photoshop CS6”.
3. In the Photoshop CS6 interface, select “File” and then “Empty Cache.”
If Photoshop crashes frequently or you notice that the scratch disk is full, you may want to consider upgrading to a more recent version of Photoshop.