How can I Change pdf Fomats to psd?

Question

I Rename one of my .psd (Photoshop) files to . pdf and know I cant open it and I can Change it again to .psd, even when I rename it and put a .psd at the end of the file name it Photoshop dont open it , What to do ? How can I change again the format to PSD

Answer 1

Rightclick then click open with, then Photoshop.
To make it permanent after that, click change then choose Photoshop, then apply...
Btw, you can't open a Acrobat file with Photoshop that I know of or vice versa.