Need a quick win? Start with Step 2—changing the scratch disk to an external drive solves the issue instantly for most Mac users.
Here’s a short, helpful piece you can use—whether for a blog, troubleshooting guide, or social media caption. Scratch Disks Are Full? Fix Photoshop on Mac in 5 Steps
Few things stop a creative workflow faster than Photoshop’s dreaded alert:
Always keep 20–50 GB free on your main drive, or set a dedicated external SSD as the primary scratch disk.
