1) The DVD was written using a 3rd party burning software that modifies some crucial bits, as a result of which windows cant read it correctly. This problem used to happen in XP, one would think MS would have fixed it by now.
2) The DVD writing session was not closed.
3) The particular dvd brand may not be compatible with your drive, or your drive may be malfunctioning.
4) This may not be the case here but just FYI, one can make a bootable dvd with all the data contained within the boot loader itself. As a result, the data cannot be seen inside windows, it becomes visible once the disk boots and loads the hidden image. You can see the disk details using Isobuster and even extract the image.
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