This is how to convert from dual layer disc to single layer! I have done it and it works perfect, I have finished the game! In short- game too fusking short! shame! Unrar (unpack) the DL game to a specific folder, then insert the bat files that are floating around on the net and insert them all into the same folder, now you should have the iso game image that is too big plus 5 other files (which are the .bat files ok!)- Double click on the halo2dvd5.bat file and it extracts all the files to a folder it creates, then it repacks/recreates a iso. Image of the game with the necessary files only to fit onto a dvd5. Though with the extraction and re-creation of the iso you need to have plenty of room on HD to fit it all- say 13GB should be fine. What you have: -rar files you DL 2.8GB -ISO image u unpacked from rars 4.7GB -extraction FOLDER it creates of the iso to make a new dvd5 iso image, it becomes 4.7GB (this becomes nothing when new iso image is created, except for what is not needed) -then a new iso created to fit to a dvd5! 4.5GB I have put this up to hopefully help people learn how it works, dont PM me as not interested, if you can't figure it out then buy it!!!!!!!!!!!!!!!