To mark the 45th anniversary of DOS, Microsoft has open‑sourced the original 86‑DOS 1.00 kernel, early PC‑DOS snapshots, classic utilities like CHKDSK, and Tim Paterson’s handwritten notes, providing researchers and educators with a rare, fully documented view of the OS that became the foundation of MS‑DOS.
Microsoft and IBM have released the source code of MS‑DOS 4.0 on GitHub under an MIT license, providing the historic OS’s binaries, disk images and documentation, while the article recounts the system’s 36‑year legacy, the role of researcher Connor Hyde, and the broader impact on DOS history.
In April 2024 the Hobbes OS/2 Archive announced its shutdown, prompting a detailed historical overview of OS/2’s joint IBM‑Microsoft development, its competition with Windows, its lingering enterprise use, and the broader lesson that legacy operating systems continue to underpin many critical applications today.
This article chronicles the development of Windows 95—originally code‑named Chicago—covering its strategic origins, the Cougar/Panther project lineage, its innovative system architecture, design goals, launch marketing, and the massive market impact that reshaped personal computing.
This article traces the complete history of Microsoft's DOS and Windows families, from the 1975 Altair 8800 and early CP/M systems through the acquisition of QDOS, the rise of MS‑DOS, and the successive Windows releases that shaped personal computing up to the modern Windows 11 era.
From the 1980s rise of Unix, DOS, and MacOS to Andrew Tanenbaum’s teaching OS MINIX, Linus Torvalds built Linux, leading to a two‑decade legal battle with SCO over alleged Unix plagiarism, culminating in a settlement that finally closed the saga.
Linus Torvalds reflects on Linux’s 30‑year journey, explaining why the OS has four “birthdays” — the first public news‑group post, the 0.01 release, the 0.02 announcement, and the later milestones — while sharing insights on early development, licensing, and the rise of open‑source collaboration.
This article chronicles Linux’s 30‑year journey—from the early hobby of Linus Torvalds and the birth of the Tux mascot, through pivotal milestones such as the rise of distributions, corporate adoption, cloud supremacy, and the ongoing impact on modern computing.
This article chronicles Linus Torvalds' journey from a graduate student tinkering with a 386 PC and Minix to creating the Linux kernel, highlighting the technical, historical, and community factors that propelled Linux to become the leading open‑source operating system.
This article chronicles Linus Torvalds' early life, the creation and naming of Linux, its release under the GNU GPL, the development of its kernel, community contributions, and the role of companies and foundations in shaping the open‑source operating system.
This article chronicles the development, challenges, and ultimate decline of IBM’s OS/2 operating system, examining technical decisions, market dynamics, and strategic missteps that led to its failure despite early promise in the.
This article traces Unix’s half‑century evolution from a failed Multics project at Bell Labs, through the resource‑scarce PDP‑7 experiments that birthed UNICS, to its legacy in BSD, Linux and ultimately the Android and iOS operating systems that power modern smartphones.
This article traces two decades of Chinese operating system development—from early Linux initiatives like Red Flag Linux to carrier‑backed mobile platforms and Alibaba's YunOS—examining technical, market, and policy factors that could determine whether a home‑grown OS can achieve mainstream success.
