File type,i couldn't open my drives correctly.

Question

i only have'find'action in drive\advance window.iwant to set open(action)as default.but i dont have this 0ption in this window. i want to made new action to open the drives,but i could not find the'application used to perform the action'.also i made new action with wrong application and i can't remove it because edit and remove key is lock. Help me!