alexfree
Developer
Doesn't work with DVD9 games, sadly.
I have a theory that Master Disc was never possible with DVD9 games. There are strings in i.e. GT4 that suggest the devs were burning 2 different DVD-Rs and then swapping them at specific load points. This was mostly because DVD-R DL didn't exist (only DVD-ROM DL) at the time of development of GT4, but I kinda extremely doubt Sony ever supported DVD-R DL master discs in any capacity. This is kinda interesting because it makes me think we could create a patcher that allows you to burn 2 DVD-Rs of a single DVD-ROM DL game.