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XNU ("X is Not Unix") is the computer operating system (OS) kernel developed at Apple Inc. since December 1996 for use in the Mac OS X (now macOS) operating system and released as free and open-source software as part of the Darwin OS, which, in addition to being the basis for macOS, is also the basis for Apple TV Software, iOS, iPadOS, watchOS, visionOS, and tvOS.
Kernel name Programming language Used in Creator Executable format (also see section below) Type Integrated firewall SMP support Multiple architecture support (also see section below).
Build dates for Darwin versions are not publicly available; the commands below only give the build date for the XNU kernel. The command uname-r in Terminal will show the Darwin version number ("20.3.0"), and the command uname -v will show the XNU build version string, which includes the
Though WSL (via this initial design) was much faster and arguably much more popular than the previous UNIX-on-Windows projects, Windows kernel engineers found difficulty in trying to increase WSL's performance and syscall compatibility by trying to reshape the existing NT kernel to recognize and operate correctly on Linux's API.
On April 3, 2006, Apple released their 10.4.6 update [21] and again patches were released within two weeks that allowed users to install most of this update on non-Apple computers, although this did not include the updated kernel in 10.4.6. In June 2006, an updated MacBook Pro was released for the 10.4.7 Mac OS X update for non-Apple computers ...
After recompiling a kernel binary image from source code, a kernel panic while booting the resulting kernel is a common problem if the kernel was not correctly configured, compiled or installed. [8] Add-on hardware or malfunctioning RAM could also be sources of fatal kernel errors during start up, due to incompatibility with the OS or a missing ...
A Mac OS X 10.5 Leopard or Mac OS X 10.6 Snow Leopard installation disc or Mac OS X Disc 1 included with Macs that have Mac OS X 10.5 Leopard or Mac OS X 10.6 Snow Leopard preinstalled; this disc is needed for installation of Windows drivers for Mac hardware; 10 GB free hard disk space (16 GB is recommended for Windows 7)
A loadable kernel module (LKM) is an executable library that extends the capabilities of a running kernel, or so-called base kernel, of an operating system. LKMs are typically used to add support for new hardware (as device drivers ) and/or filesystems , or for adding system calls .