Photosohp and ssd needs to be set?

[Buck1]

As I noticed on adobe official sites about setting best performance to work with photoshop- there is information about using photoshop through ssd hard drive.

I have on my macbook air ssd, of course. But my question is (just very dump, may it be): it need somewhere to set in photoshop this settings? For faster using of it?

Thank you very much

EDIT: I have inly one part selected of my drive (ssd 64GB) Not any separates parts of it.

 

[alphaod]

Just select your SSD as the primary scratch disk.

It's in Preferences—>Performance.

 

[PodPacker]

Do You Mean Scratch Disk?

Since there is only one drive on the MBa you don't need to do anything. The default scratch disk is the SSD. I have no problems running PS on my MBa and I work with files that are 100+ MB. You may have some redraw issues if the files get too big. I shoot stuff for Playtex and when I had some large composite images (800+ MB) my MBa stuttered a bit, but it handled the files without crashing.