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Is Mac OS X based on FreeBSD?

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Anibal Gusikowski

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Q: Is Mac OS X based on FreeBSD?
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Is Mac OSX is a distribution of Linux?

OS X was forked from the FreeBSD 2.x/3.x branch. with kernel mods and the quartz userland. the various OS X releases have corresponding FreeBSD releases. it uses the FreeBSD mach microkernel with os9 compatibility. Darwin is the development builds of OS X versions. the FreeBSD guys backport OS X tech into their OS. OS X is opensource aside from the quartz userland. OS X also includes kernel components from the NeXT step operating system.


What percentage of the operating system market do Windows Mac OS X Linux FreeBSD and Solaris have?

mac os


Does Mac OS X use a Linux or a BSD kernel?

Mac OS X uses a Mach kernel and FreeBSD utilities at it's core.


What is the foundation of the Mac OS X desktop?

I'm not sure if you mean the foundation of Mac OS X itself, or of the desktop. The desktop is a part of Mac OS X's Finder application which is written by Apple from scratch in Objective-C using the Cocoa framework. Mac OS X itself's core is Darwin, a UNIX operating system based on the open source FreeBSD.


What is the engine behind Mac os X?

Mac OS X is based on UNIX.


Which kernel platform can be used to run a Macintosh OS X system?

Mac OS X is built on the XNU (X is Not Unix) kernel which is a hybrid combining elements of the Mach kernel and FreeBSD.


What kernel is Mac OS X based on?

Mac OS X is based on the XNU kernel, a microkernel Mach kernel with a BSD userland, which makes Mac OS X's kernel a hybrid-kernel.


What is a Mac OS X PPC?

Mac OS X PPC is a version of Apple's Mac OS X operating system that runs on Power PC (PPC) architecture. This is opposed to Mac OS X for X86 which runs on Intel-based Macs. Mac OS X 10.0 through 10.5 can run on PowerPC based macs whereas Mac OS X 10.6 Snow Leopard will only run on Intel-based Macs.


What is the iPhone OS?

It runs a pared down version of Mac OS X with a FreeBSD sub-system. It also operates over a Darwin Kernel for those who are interested.


It is now possible for Mac OS X to work on Intel-based computers?

Providing the Intel based computer is manufactured by Apple then their Mac OS X software can work on it. The Mac OS X user's licensing agreement prevents Mac OS X being used on computers that are not made by Apple.


Does Mac OS X have a Registry?

No, the Registry is a feature of Microsoft Windows only. Neither the original Mac OS or the newer Mac OS X have ever used a Registry, Mac OS X is based on Unix which has never used a Registry.


What does X stands for in OS X?

Mac OS X is pronounced Mac OS Ten. It follows on from Mac OS 9 which was the last version of what is now known as the classic Mac OS and it saw the introduction of the new UNIX based OS so the Roman numeral X was adopted to mark the change.