Mac OS X 10.0, codenamed 'Cheetah', was a major release of the Mac OS X operating system that revolutionized the way users interacted with their computers. Released in March 2001, this milestone marked a significant departure from the classic Mac OS and introduced a brand new code base separate from its predecessors.

One of the notable features of Mac OS X 10.0 was its support for PDFs, which allowed users to create documents from any application. The operating system also boasted full preemptive multitasking capabilities, a long-awaited feature that set it apart from other systems at the time.

The introduction of TextEdit, a new on-board word processor, replaced SimpleText and provided a more robust editing experience. Meanwhile, Terminal offered users access to the underlying Unix core of Mac OS X, providing a command-line interface for advanced users.

Under the hood, Mac OS X 10.0 featured an Open Source Foundation Mach kernel (OSFMK 7.3), which formed part of the XNU kernel and was one of the largest technical changes in the operating system's development.

The Dock, a new way to organize applications on the user interface, replaced the classic method of launching applications from previous Mac OS systems. This innovative feature allowed users to easily access their favorite programs with a simple click.

Despite its promising start, Mac OS X 10.0 had some growing pains. It was plagued by missing features and performance issues, which led to a rocky launch for the new operating system. However, it was praised for being a good start to an operating system still in its infancy, with regards to completeness and overall stability.

Mac OS X 10.0 introduced a completely new system of memory management and a Darwin Unix-like core, marking a significant departure from traditional Mac OS systems. This radical change laid the foundation for future releases and cemented Mac OS X as Apple's answer to a next-generation operating system.

With a price tag of $129, Mac OS X 10.0 was released in March 2001, paving the way for subsequent updates, including Mac OS X 10.1 (code-named Puma). The 'Cheetah' release marked an important milestone in the development of Mac OS X, which would later be renamed to OS X and macOS.

'Mac OS X 10.0 Cheetah ISO'

Mac os x 10.0 cheetah iso