![]() ![]() There has been lots of speculation as to whether or not the OS was completely written from scratch, or if it was simply a modified form of the NT kernel. The underlying Kernel was designed specifically for the Xbox. Those are not things that I will talk about in this post, as they are secondary to the main idea behind this thread. Note: There are security systems in place that have been both defeated and bypassed due to failure to read Intel documentation on Microsoft's part. ![]() The entire kernel exists within the first 1MB of system RAM once it's fully booted. Internally, the OS consists of the bare-minimum boot code to transfer from x86 POST up through switching to protected mode and 32-bit kernel mode. It was designed around a heavily customized Windows Embedded line of Operating Systems. The Original Xbox Console's Operating System, herein called xboxkrnl, was based on Windows 2000 code. Disclaimer: I will not provide links to sources, as per forum rules.
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