***************************DISCLAIMER***************************
This tutorial has been tested by me. And it worked great
While great care has been taken, this tutorial may contain errors.
Use this tutorial at your own risk!!!
***************************DISCLAIMER***************************

This tutorial will allow you to use HDD’s that are not ‘certified’ by Microsoft.
This specific tutorial is written for use with the Western Digital 120 GB BEVS series ONLY.

Drive structure on the Xbox 360 hard drives:

Drive contents:
Address Length (bytes) Contains
0×0000 8192 Null (0×00)
0×2000 68 Plain text hard disk info
0×2044 24 Static Binary Info (doesn’t change console to console)
0×205C 256 Dynamic Binary Data (changes from console to console – possibly encrypted serial number of console)
0×2202 2 Size of following PNG file
0×2204 2754 MS logo in PNG format (aka hddss.bin), made with Macromedia Fireworks MX 2004 on the 19th of July 2005

Partitions:

Address Description
0×80000 Cache Partition (aka partition 0)
0×80080000 Unknown
0×120EB0000 Xbox Backwards compatibility drive (aka partition 2)
0×130EB0000 Main Xbox 360 Partition (aka partition 3)

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