I recently dug out an original Xbox that I bought secondhand more than 18 years ago. Back then, it came with discs that could run things like Nintendo games, but I never understood how the setup worked. I vaguely remember the console eventually resetting and behaving like a standard Xbox.
Now, while preparing to play Halo 2, I noticed a program called "Linux Installer" at the top of the data list. I'm curious what it was used for, whether it explains the old game discs, and what I could still do with it today. I mainly want to keep playing Halo, Halo 2, and possibly Hitman, but experimenting with the console sounds interesting too. I currently don't have an obvious way to connect it to the internet, so I'd also like to know whether that would be necessary.
4 Answers
If the console has a hardmod or a flashed TSOP, it may be running a custom BIOS. One clue is the startup animation: modified BIOS versions sometimes change the color of the usual Xbox animation or replace the standard copyright text. A softmod can provide similar functionality without permanently changing the firmware, so the startup screen alone may not tell you everything.
Linux on the original Xbox was mainly a hobbyist project. There were lightweight distributions and ports based on Debian, Damn Small Linux, and Gentoo. The Xbox could function as a small Linux computer, media box, or development machine, but the software is very old and usually requires compatible installation files and a way to transfer or burn them. You don’t necessarily need internet access on the console itself if you prepare everything on another computer.
That installer suggests the Xbox was modified at some point. It may have had a softmod, a modchip, or a flashed TSOP, which allowed it to run unsigned software instead of only official Xbox games. Linux was one option; the same modification could also explain discs that launched emulators or other unofficial programs.
A modified original Xbox can do much more than install Linux. Depending on the setup, it can run games and emulators from its hard drive, emulate older systems such as the NES, SNES, Game Boy, and N64, play media, and load homebrew tools, cheats, or custom content. Since you remember playing Super Mario 64 and Pokémon FireRed, it probably already had several emulators installed.
I checked the data section and found programs for SNES, Game Boy, N64, and a few other systems. I’ll explore those after finishing my Halo 2 marathon.

That makes sense. I was too young at the time to understand what the modification was doing. I’ll have to inspect the startup screen and installed programs more closely.