If you are currently running ArcaOS 5.0, you are eligible for a discounted upgrade. However, Arca Noae has strict license rules:
The most transformative change in ArcaOS 5.1 is its ability to boot on modern PCs with UEFI firmware, even those lacking a Compatibility Support Module (CSM) for legacy BIOS booting. This is a massive technical achievement, as OS/2 was never designed to understand GPT or UEFI. Arca Noae accomplished this by developing a proprietary 64-bit UEFI loader that hands control over to the 32-bit OS/2 kernel. This ensures that ArcaOS 5.1 can be installed on large drives exceeding 2TB, or coexist in a multi-boot environment with modern OSes like Windows 10 and 11 without needing to reformat the entire disk. Arcaos 5.1 Iso
: ArcaOS is lightweight, lightning-fast, and highly responsive on modern processors. If you are currently running ArcaOS 5
How does ArcaOS stack up?
ArKaos 5.1 ISO comes packed with features that cater to the needs of live performance artists. Some of the key features include: Arca Noae accomplished this by developing a proprietary
Version 5.1 represents a massive milestone. It is built on the OS/2 Warp 4.52 kernel, but it has been dragged kicking and screaming into the 21st century.