
 This type of question always makes me feel stupid, but here it is.  I have: have downloaded the long patch for: and am playing 
Scratches: the Director's Cut.  Thus far all is gorgeously well.  Some day I will finish and uninstall it.  Can I add the large download to the existing game disk?  Can I and should I save it to another disk? Will it automatically disappear from my computer when I uninstall the game.  Does all that mean that a year or more from now, when I wish to replay 
Scratches: The Dirctor's Cut that I will again need to download the giant patch.  
(
Note, this becomes even more important since here are web rumors of another large patch which may be instead of and/or may be in addition to the existing large patch. 

 Scrooge was correct "I'll retire to Bedlam!!!)