On a modified console, this content is handled as rather than a standalone game ISO.
Digital collectibles for the Xbox dashboard (though these often require specific unlockers on RGH systems).
The for JTAG/RGH-modified Xbox 360 consoles is a digital preservation of the physical "Bonus Disc" originally included with the Limited Collector's Edition of the game . What’s Included in the Bonus Disk Content? Alan Wake Bonus Disk [Jtag/RGH DLC]
In-depth featurettes detailing the technical hurdles of creating the game’s lighting engine and "Pacific Northwest" atmosphere.
An option to play through the game with audio commentary from Remedy Entertainment’s creative team, including Sam Lake. On a modified console, this content is handled
If you are looking for the actual gameplay expansions ( The Signal and The Writer ), those are separate DLC files and are not contained within the "Bonus Disk" package.
For players using a modified console, this DLC package typically unlocks several gigabytes of behind-the-scenes material that wasn't available in the standard retail version: What’s Included in the Bonus Disk Content
The files must be placed in the internal hard drive path: Hdd1\Content\0000000000000000\4D530805\00000002\