this post was submitted on 20 Aug 2023
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Linux
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From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Linux, and much of the open-source software that goes with it, has been multi-architecture for a long time. If you take something that already runs pretty decently on x86, x86_64, PA-RISC, Motorola 68000, PowerPC, MIPS, SPARC, and Intel Itanium CPUs, porting it to yet another architecture is, while not trivial, at least mostly a known problem.
Windows, by contrast, was built for descendants of the Intel 8088, period. It's unsurprising that porting it is a hard problem and that results aren't always satisfactory.
(Apple built on top of a modified BSD kernel, and BSD has also been ported around quite a bit, so they also have a ports-are-a-known-problem advantage.)
No. Windows has portable architecture and it's quite simple for Microsoft to compile it for whatever processor they want. Just change HAL and you're ready to go.