what kernel does freebsd use?

[Chuck Swiger]

Bill Campbell wrote:
> On Mon, Jun 30, 2003 at 09:10:32AM -0400, Kenneth Culver wrote:
>>FreeBSD uses the FreeBSD kernel. You can recompile it using the source for
>>the FreeBSD kernel, but it is the only kernel that works with FreeBSD.
> 
> Perhaps there's some confusion with OS X which starts life as FreeBSD, but
> uses a mach kernel.

Perhaps there's some confusion with OS X.  :-)

OS X started life as NEXTSTEP, using the CMU Mach 2.0 kernel written by Avie 
Tenavian and a BSD-4.3_reno userland, heavily influenced by SunOS 3/4.  Since 
NEXTSTEP, Apple has updated the BSD layer to 4.4Lite and included changes 
derived from FreeBSD, OpenBSD, and NetBSD-- but mostly the latter, at least at 
the time I was looking.

Certainly it's false to claim that OS X started as FreeBSD.

-- 
-Chuck