For the first time, users can install OS/2 on systems that lack a "Compatibility Support Module" (CSM) or traditional BIOS.
ArcaOS 5.1.2 remains the most current stable version as of early 2026, offering continued refinements for modern PC compatibility. ArcaOS 5.1 - ITE
The 5.1 release can handle GUID Partition Tables (GPT), allowing for larger drives and modern disk management. arcaos 51 iso hot
A DVD burner or USB stick is required to create the bootable media.
Runs classic OS/2 Warp 4 applications natively while providing modern productivity tools and utilities right from the first boot. For the first time, users can install OS/2
Visit the Arca Noae Store to select either the Personal or Commercial edition.
The ISO can be used to create a bootable USB stick using standard tools on Windows, Linux, or macOS. System Requirements A DVD burner or USB stick is required
Intel Pentium Pro / AMD K6 or higher (64-bit CPUs supported). RAM: 512MB minimum (2GB recommended). Disk Space: 2GB free space.
The ArcaOS 5.1 ISO isn't just a simple update; it's a comprehensive rebuild of the environment:
Optimized for guest installations in VirtualBox , VMware, and VirtualPC.