Microsoft quietly released a security update to the XBox 360 that closed a security hole that enabled hackers to load Linux onto the XBox 360. Essentially, the hack used a method to inject data into non-privileged memory areas, allowing a hacker with physical access to an Xbox 360 to run arbitrary code such as alternative operating systems with full privileges and full hardware access. Sorry Linux fans, Microsoft closed this security hole. 
No Linux for you!
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What is this!! this is the only reson i wanted to flash my dvd drive bios. Once you buy it, you should be able to do whatever the hell you want to do with it, they have no right (actualy yes they do) but thats only to protect against iliegle copies of games.
Sony gives you the tools to partition the drive and prety musch do what it wanted to do with the 360, render 3d graphics, make a render farm.