Xbox One MTE Test Disc found inside the disc of a Xbox One

The disc itself could just contain assets for the manufacturing / MTE executable to use. The xbe / exe are different between the 360 and the one but the MTE assets are the same. This could explain why discs labeled for the 360 console and dated before the xbox one entered manufacturing were found inside xbox ones.

In this thread SamY found a "manufacturing.exe" on an xbox one which has embedded strings referencing MTE_DURANGO. Could be relevant. http://www.assemblergames.com/forum...e-white-devkit&p=724385&viewfull=1#post724385