XBox is no one's primary PC, and is only used for diversions, not work and hobbi...

ashishgandhi · on Oct 30, 2011

If you talk of "primary PCs" (OS X) it's as open as proprietary gets - more than say Windows - such as the kernel is open source.

veyron · on Oct 30, 2011

Is that true of osx lion? How do you recompile and load the kernel?

gnok · on Oct 30, 2011

It is, to an extent.

For OS X 10.7.2, you can grab the source at http://opensource.apple.com/source/xnu/xnu-1699.24.8/.

The "README" at http://opensource.apple.com/source/xnu/xnu-1699.24.8/README has instructions on building and installing the kernel. Admittedly, while I have never actually done this, I've seen lots of instructions floating around for doing this "correctly".

GeneralMaximus · on Oct 30, 2011

Yes, that's true. You can do much more than just recompiling the kernel. For example, see http://puredarwin.org