Operation Flashpoint 2 Dragon Rising - How to reduce dvd space

[rastan76]

Hi all
First of all , sorry for my bad english

I'd like to reduce the dvd space of OF Dragon Rising (Multi 5 retail version) . Actually the game is 4,37 gb and fits a dvd 5 (1 mb oversized) ... but deleting 4 languages it will be 3,3 gb (more than 1 gb free, not bad ! I know this because Russian version it's a multi 2 and it's a 3,7 gb dvd) The languages are all stored into 3 .cab files , but I don't know how I can edit these files ... I ask this because I used to put all my backup games into an external drive and not (if possible) into dvds . Any suggestion?

Thanks