Scratch disk space showing in Photoshop preferences is not accurate. Why?

The drive has 441GB of empty disk space?

Plus, on at least the Mac, there are invisible files and cache files that can take up a lot of unreported space.

You may want to try something like this free utility:

https://www.titanium-software.fr/en/onyx.html
https://www.macworld.com/article/352902/onyx-review-macos.html

Hi there,

We're sorry about the trouble with Photoshop because of the storage space it is showing. Would you mind sharing the version of Photoshop you are using?

The amount of space that you see on the drive when you go to the scratch disk preferences of Photoshop is the amount of space left after launching Photoshop and the documents you have opened (if any). Photoshop reserves some space as a scratch disk for its processes when you launch the application and more depending on the size of the document you are working on.

The screenshot you have a share of the scratch disk preferences window, is that after opening a document or just launching Photoshop?

Try resetting the preferences of Photoshop by: https://helpx.adobe.com/photoshop/using/preferences.html

Backup your preferences before resetting by: https://helpx.adobe.com/photoshop/using/preferences.html#BackupPhotoshoppreferences

Let us know if that helps.

Regards,

Tarun