The latest version of ArKaos, version 5.1, brings a host of exciting new features and improvements to the table. Some of the key updates include:
For years, running OS/2-based systems required legacy BIOS or Compatibility Support Module (CSM) activation in the firmware. ArcaOS 5.1 changes this entirely:
: If you have an active Support & Maintenance subscription , these updates are free of charge . Users on the older 5.0 version are eligible for discounted upgrades. System Requirements for Installation
Improved drivers for modern SATA, AHCI, NVMe, and USB devices [3]. Arcaos 5.1 Download
Arca Noae does not offer a trial or demonstration version of ArcaOS. The operating system is a commercial product, and you must purchase a license to obtain the installation ISO. This policy reflects the costs of licensing from IBM and the significant development effort required to keep OS/2 alive.
[Download ISO] ➔ [Create Bootable USB/DVD] ➔ [Configure Target Bios] ➔ [Run Installation] Step 1: Create Your Installation Media
ArcaOS supports booting the installer from a USB stick. The USB install stick can be created using major operating system: Windows, Linux, macOS, or even OS/2, eComStation, or ArcaOS itself. Once built, the USB stick can be inserted into any USB port on the target system to boot into the ArcaOS installer in either UEFI or traditional BIOS mode. The latest version of ArKaos, version 5
Installing ArcaOS 5.1 is unique compared to modern mainstream OSes like Windows 11 or Linux distributions. It is highly recommended to review the official README.TXT file included with your ISO before installation.
If you already own ArcaOS 5.0, you can upgrade to version 5.1 at a discount:
Tailored for hobbyists, home users, and retro-computing enthusiasts (includes 6 months of support/updates). Users on the older 5
: You will see a list of your associated ArcaOS licenses. Click the download link for your specific version (e.g., ArcaOS 5.1.2). Language Selection : If you need a version other than English, use the Build ISO Again button to select your preferred language. Key Features of the 5.1 Branch
Head over to the official website at arcanoae.com.
Prices are current as of the latest release information.
: While it remains a 32-bit OS, it supports modern x86 processors from Intel and AMD, along with updated drivers for audio, video, and network hardware.
Because ArcaOS is a commercial product under direct license from IBM, . Every individual ISO file is custom-built and personalized for the license holder upon purchase. 1. Purchase a License or Upgrade