It’s reasonably straightforward. Briefly, install Xebian Linux â€” a Debian-based distro for the Xbox â€” slap on the PearPC emulator and top with OS X from the Apple installer disks. It’s plainly an ego hack rather than something useful: the team reports the OS X installer takes about 10 hours to complete its task.
This is supposedly a screenshot taken of Mac OS X running on an Xbox, courtesy of the Xbox Modification Team. Running Apple’s Unix-on-PowerPC operating system on Microsoft’s own x86 box might seem an unlikely proposition but it’s all done through the magic of, uh, Linux.