Xbox One OS build 8422

Xbox One OS build 8422 is a build of Xbox OS. It was originally shared in the form of an alpha development kit disk image dump of the October 2012 XDK on 2 August 2015 by warez group DemonSquad"Xbox One Operating System, Have fun @KEEMSTARx @Microsoft @Xbox @gamespot", DemonSquad on Twitter. 2 August 2015. following allegations surrounding the purchase of a development kit by an unknown individual on eBay in August 2012.Purchese, Robert. "Microsoft Xbox Durango Development Kit" sells for thousands of pounds on eBay, Eurogamer. 13 August 2012. The operating system is based on a heavily stripped-down version of the Windows 8 codebase, leaving only the bare essentials required for launching Xbox One/Durango games such as minimal GDI+ and USER APIs.
It notably contains an early version of the Xbox XDK Launcher (referred to as the Xbox Compositor), which is merely a simple list of launchable/installed applications complete with a small number of configurable settings, along with additional debug information detailing the console's specifics and current network information printed at the top right.
The full recovery imaging tool for this build (which additionally includes a complimentary Preinstallation Environment image) was found on 7 February 2024.
== Release notes ==
The below release notes (sourced from the January 2013 Xbox One/Durango XDK documentation) are republished here for archival purposes only.
== Findings ==
The operating system is based on a heavily stripped-down version of Windows internally referred to as ClientCore,Microsoft-ClientCore-ApiSchema-Package~31bf3856ad364e35~amd64~~6.2.8422.0.mum in Windows\servicing\Packages; Microsoft-Windows-ClientCoreEdition~31bf3856ad364e35~amd64~~6.2.8400.0.mum in repair content packages for Windows 8 build 8400 and therefore only includes the necessary APIs required for games built for the Xbox One (then-codenamed Durango). Support for legacy Win32-based applications is almost entirely absent, with binaries commonly used by regular desktop applications being replaced with cut-down variants containing APIs found in regular PC games that additionally take advantage of DirectX or featureless stubs such as shell32.dll. Likewise, a unique disclosure warning with a similar premise to the NDA warning found in the watermarks of various Windows 8 builds can also be found within the aforementioned binary's respective MUI file, stating the following:
The build comes with a driver for an AMD Radeon HD 6300 engineering sample and contains several internal development tools for Xbox One applications, including tools used to update the firmware for the Xbox One's Kinect sensor (referred to internally as NUI 2.0 and AlphaSensor) and built-in utilities for the SmartGlass companion application. By default, the preinstalled image contains two applications used for testing the Kinect's hardware. On startup, multiple services that are required for full development kit functionality (such as an FTP server and a Telnet client) are launched alongside the compositor and the standard Windows command line interface, which can be switched to with the hotkey.
The build is best utilized with an Xbox 360 controller, although it is possible to fake controller input by pressing the key and using the keyboard to navigate through the interface.
A copy of the original recovery media is included within the available disk image in the form of a recovery.gdf file located at the disk root.
The full recovery imaging tool is a PE polyglot with a modified Xbox ISO image, where the volume descriptor is placed at the last sector (ignoring the PE signature placed after the ISO image) instead of sector 0x20, and the volume descriptor pointing to the root directory located after the recovery application PE at sector 0x37. Using a hex editor to place the volume descriptor at the expected location allows third-party tools like PowerISO to read the image.
== Bugs ==
*The Launcher found within the original leak's virtual hard disk (and the VHD provided within its recovery media) does not function by default due to file conflicts between the original bootable recovery tool WinPE image (which was applied first) and the actual OS image. It is highly recommended to use a clean copy of the build, stored in the form of a virtual hard disk (VHD) image located inside of the recovery media's Xbox Game Datafile (GDF). The respective GDF image is bundled with the associated XDK recovery tool and is additionally stored inside of the root directory of the original leak VHD's OS partition.
==Gallery==
=== Recovery Tool ===
XboxOneOS-6.2.8422.0-DurangoRecoveryTool-Home.png|Recovery tool home page
XboxOneOS-6.2.8422.0-WinPEInit.png|Bootable USB recovery interface
=== Interface ===
Windows8-6.2.8422.0.fbl_fun_embedded_xos_devs-Boot.png|Boot screen
Windows8-6.2.8422.0.fbl_fun_embedded_xos_devs-Tools.png|Tools
Windows8-6.2.8422.0.fbl_fun_embedded_xos_devs-NetworkSettings.png|Network Settings
Windows8-6.2.8422.0.fbl_fun_embedded_xos_devs-VisualGestureBuilderPreviewer.png|Visual Gesture Builder Live Previewer
Windows8-6.2.8422.0.fbl_fun_embedded_xos_devs-NuiView.png|NuiView
=== Miscellaneous ===
==== Development kit ====
DurangoXDK-AlphaKit25.png|Alpha development kit
DurangoXDK-RearPanel50.png|Ditto, back side
DurangoXDK-NUIDurangobackUSB.png|Ditto, with required USB devices connected to development kit
DurangoXDK-NUIBackplateUSB.png|Inside
DurangoXDK-NUIMotherboardUSB.png|Ditto; AMD Radeon HD 7870 GPU sample additionally shown
==== Kinect sensor ====
DurangoXDK-NUISensorFront.png|Provided Kinect sensor (NUI/AlphaSensor)
DurangoXDK-NUISensorBack.png|Ditto, back side
== Notes ==
== References ==
Category:Xbox One OS builds