IBM OS/2 Warp To ArcaOS


IBM OS/2 Warp to ArcaOS, an historical operating system.

OS/2 is a series of computer operating systems, initially created by Microsoft and IBM under the leadership of IBM software designer Ed Iacobucci.

As a result of a feud between the two companies over how to position OS/2 relative to Microsoft's new Windows 3.1 operating environment.

However the two companies severed the relationship in 1992 and the development of OS/2, fell to IBM exclusively.

The name stands for "Operating System/2", because it was introduced as part of the same generation change release as IBM's "Personal System/2 (PS/2)" line of second-generation personal computers.

The first version of OS/2 was released in December 1987 and the latest version were released in December 2001.

OS/2 was intended as a protected-mode successor of PC DOS. Notably, basic system calls were modeled after MS-DOS calls; their names even started with "Dos" and it was possible to create "Family Mode" applications – text mode applications that could work on both systems.

Because of this heritage, OS/2 shares similarities with Unix, Xenix, and Windows NT.

IBM OS/2 Warp To ArcaOS.

ArcaOS is an operating system developed and marketed by Arca Noae, LLC derived from OS/2, based on the last release by IBM.

Development continues with a stated goal to add wider compatibility for more modern computing platforms, including UEFI and GPT support.

It has limited PAE support (RAM in excess of 4 GB is utilized as a RAM) and utilizing its SMP kernel, supports up to 64 physical CPUs or real CPU cores (Hyper-threading is not recommended).

ArcaOS is a 32-bit operating system that runs on the x86 processor architecture (real or virtualized).

ArcaOS is based on IBM's OS/2 Warp 4.52 (also known as Merlin Convenience Pack 2 or MCP2).

ArcaOS 5.0.3 is ACPI 6.2A-compliant to ACPICA 20180508.

IBM doesn't make consumer desktop OSes anymore for a reason.

On a cloudy Seattle day in late 1980s, Bill Gates, the young chairman of a tiny company called Microsoft, had an appointment with IBM, that would shape the destiny of the industry for decades to come.

Over the course of the day, a contract was worked out whereby IBM would purchase, for a one-time fee of about $80,000, perpetual rights to Gates’ MS-DOS operating system for its upcoming PC. IBM also licensed Microsoft’s BASIC programming language, all that company's other languages, and several of its fledging applications.

In exchange for giving up perpetual royalties on MS-DOS, which would be called IBM PC-DOS, Gates insisted on retaining the rights to sell DOS to other companies. 

At the time, IBM was the only company making the PC.

Other personal computers of the day either came with their own built-in operating system or licensed Digital Research’s CP/M, which was the established standard at the time.

Gates wasn’t thinking of the present, though, which he explained in an interview for the 1996 PBS documentary Triumph of the Nerds.

The personal computer market, however, ended up working a little differently. PC Cloners were smaller, faster, and hungrier companies than their mainframe counterparts.

They didn’t need as much startup capital to start building their own machines.

Eespecially after Phoenix and other companies did legal, clean-room, reverse-engineered implementations of the BIOS (Basic Input/Output System) that was the only proprietary chip in the IBM PC’s architecture.

To make a PC clone, all you needed to do was put a Phoenix BIOS chip into your own motherboard design, design and manufacture a case, buy a power supply, keyboard, and floppy drive, and license an operating system.

An operating system Bill Gates was ready and willing to license to you. A Compaq was the first PC clone on the market.

IBM had only gone to Microsoft for an operating system in the first place because it was pressed for time.

By 1980, the personal computing industry was taking off, causing a tiny revolution in businesses all over the world.

By 1995 Windows hit it really big and Bill Gates and Microsoft was on top of things taking over the home PC market, including some marketshares on the business side of things.

Today OS/2 has a new name, but it is no longer for personal home computer users, only for mainframes.

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