DL DVD emulation

I want a program that can emulate one big application from DL dvd (over 5 GB) to two singlelayers and run them from there as if it was on DL (if an app needs some data from another "layer" it will stop the app and ask me for inserting actual dvd)

I can burn the dvds again if needed (it will be good for allow me to select "most needed" files and save it on one disc)
 
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