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Differences between Xbox OG silvers/confidential discs

kennypecheur

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Hi all,

Recently, I have been able to get a bunch of Xbox Original review / preview discs from a former video game magazine employee.

In the lot, there is many different kind of discs : Microsoft confidential, Other kind of Pressed discs, Burned discs,....

I was able to play some of them on a retail xbox, but some of them are only playable on a xbox debug unit.

The burned ones can obviously not be played on a standard xbox, but I try to understand why some pressed discs can be played on a retail unit and other not.

For example, the three discs bellow seems to be the same kind of pressed discs. I have been able to play the discs on the first picture but not the one on the second picture.

IMG_20200815_112424.jpg

IMG_20200815_112503.jpg

Does anybody knows if there are some specific rules regarding which disc can or can not be played on a retail unit ?

When putting the Ninja Gaiden disc on a retail system, I got the message below :

IMG_20200812_154238.jpg

Sorry if my questions can sound stupid but I am really not familiar with these discs.
 

derSammler

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I have a few NFR discs acting this way as well. That message with the green text is actually not coming from the Xbox but is DVD video. For some reason, some of these discs don't have the correct track layout and will cause the Xbox to start DVD playback instead.

The NFR disc of Project Gotham Racing 2 for example has this issue, too. Worked fine once ripped to hard disk, however.
 

Dink

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From what I understand, the Microsoft Confidential discs are pressed like retail discs and are signed by Microsoft themselves which explains why they can run on retail hardware. While the other burned / pressed discs were made by the developers and still have the test certificates which means they can only run on dev hardware (or maybe even a modded xbox too). The Ninja Gaiden disc might also have a test certificate or just simply has an incorrect track layout as mentioned above. Are you going to dump these though? These discs look pretty cool!
 

kennypecheur

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Thanks guys for your answers. That incorrect track layout may indeed be a reason, thanks for this information ! :)
 
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