open up nero and select dvd by clicking on the arrow in the top left corner then pick dvd copy.
then click on the image tab and if you want to keep the image file on your computer then make sure that you deselect the delete image file after disc copy. then select the place you want to save the image file to your computer or when it's burning if you leave the box checked. Now click on the copy options tab and select your dvd burner and change the right speed to whatever you want. Now click the burn tab and leave it all the same just change the simulation if you want to do a simulation DO NOT do multiple recorders and then click copy and it will burn the game
how to burn CD based games
first open up cdrwin 3.9D and select the top middle button (extract disc/tracks/sectors) then select your cd drive that has the game in it. then select where you wnat to extract the disc to. also make sure that the disc image/cue sheet is selected. now in the reading options put it on raw and for error recovery put it on abort and for jitter correction auto and for subcode analysis. keep data speed at max same with audio speed. for read rety count keep it at 0 and for subcode threshold keep it at 300. when all that is done press start and it will read the disc and copy it onto your computer. after it is done you will have a .bin file and a .cue file if the .cue file is an icon with flames then double click it and it should open up fireburner now just right click and go to burn and it will burn and be able to play on your modded ps2