HD-DVD drive

You would need an external drive to play HD-DVDs, as the Blu-Ray drive in the Xbox One cannot possibly read the HD-DVD format. Since HD-DVDs are no longer being made, I'd say it's extremely unlikely that HD-DVD support will be added to the Xbox One.

[quote user="FullHornet"]It makes absolutely no sense why an Xbox One would play DVDs and Blu-Ray's and not play HD DVDs.[/quote]HD DVD and Blu-ray are formatted differently on the disc. Blu-ray players cannot read HD DVDs and vice versa. The exception being
multi-format drives designed to read both (I have two).



Beyond the physical inability to read an HD DVD in a Blu-ray drive, there's the issue of software. HDi Interactive Format was the standard used to create HD DVD menus and other content on-disc outside of the actual movie files. Blu-ray uses scripts and Java.
Unless playback software can understand HDi Interactive Format, HD DVD menus won't work and the disc won't play.



If it was possible for Blu-ray players to play HD DVD, people wouldn't be holding onto HD DVD drives.

Sony indirectly rips people off like that & if you have a Blu-ray quad layer disc [BD-XL] you can't use it in your PS3 or any other dual layer device, unless you buy a quad layer BD drive

[some DL BRD, can be firmware updated though, but they aren't cheap]...

..

HD-DVD discs can also hold DVD media on the same layer.. So you can put the HD-DVD disc into a DVD drive & watch your movie... Then put it into your HD-DVD player & watch your HD-DVD movie.. or just watch them both on a HD-DVD drive etc..

No self-repair. Previously I had the external 360 HD DVD drive. It failed, and recently bought I new (completely new, never used) one. The console works fine, the HD DVD Drive is the issue.

HD DVDs were discontinued years ago. Plus its very rare if somebody still has one of those HD DVD drives for Xbox 360!