A burnable self-booting Xbox 360 demo DVD image is floating around on the internet. Users can supposedly download, burn this image, and run it on the new Xbox 360. OCmodshop is following this story closely, and will post more news as it is available. Here is what we know now…
PI’s nfo file says: “datafiles on this disc isn’t signed in any way”. PI is right here, but many people don’t understand this correctly. They mean datafiles like wmv, png, … aren’t signed. XEX/EXE files are still signed. The reason these executables run on recordable media is no ‘hacking’, it’s simply because Microsoft set the ‘mediaflag’ so it can run from DVD+-R too. Nothing is changed in the XEX files on the disc, so the signatures (in XEX header) are still valid. * You can’t use this disc to boot retail discs/games (like by placing them in the /demos/ dir) as those are set by Microsoft so you can only run them from DVDXBOX(360) media (and might have a DVD physical structure check too?).
Everything is playable, also the game demos (each has its own XEX/EXE file). If you add/remove files on this demo disc it’ll still boot (as long as you don’t remove essential stuff like /default.XEX of course).
Here are some other interesting details from Arakon on the xboxhacker.net forums:
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