This is for the guys who are trying to a Backup a copy of Quake 4 as Protected...
If you look at this Topic located here I am sure it will fix your problems & you will not need the Disc, But only if you have the Original Retail DVD version of the Game. If not then
BUY IT I did, you will not be sorry.
Code:
http://fileforums.com/showthread.php?t=72884
Does not hurt to try... Tested & working