Scratch disks

I think i have a problem with the scratch disks. I had a really big file open and suddenly my computer crashes. And now when I select the Startup as scratch disk it always sais the scratch disks are full. Even when I restart PS or my comp, the message stays. So I have to select a different drive.

How can I clear them?

Ideally you want a dedicated hd for your scratch disks. But since my 2nd hd is dedicated to something else, I just choose my C: drive. Make sure you clean off any junk and make sure you have lots of room. I haven't had a problem since directing it to C:. Hope that helps.

Clean up the drive that you're using as a scratch disk, like for example, unused programs, loose files, etc. The scratch disks are supposed to be cleared after you exit Photoshop, so my guess is that the drive is full to begin with. If it's not, then I have no idea.

Make sure you Defrag your drives.... Ideally when you partition a windows box you will want to partition your drive for the OS and applications, a partition for storage, and then give yourself like double your Ram (at least) partition for a scratch disc. So my main 30 gig drive has 3 partitions. So dont use your C drive for a scratch disc unless you have no choice. Also the storage partition allows you to not lose all of your files in case you need to reformat your C drive.