


You can change the scratch disk location and add multiple scratch disks from Photoshop Preferences (File menu > Preferences > Performance): If you only have one hard drive or partition in your computer, then the scratch disk will be the drive where your operating system is installed (the C drive on a Windows system). Photoshop uses your hard drive as temporary "swap" space, or virtual memory, when your system does not have enough RAM to perform an operation. The Photoshop scratch disk is your hard drive.

What is the Photoshop Scratch Disk? How Do You Fix "Scratch Disk Full" Errors? See below for more information about "Scratch disk" and how to fix the error. You need to free up space on your hard drive.
