ArcaOS 5.1 is . It is a commercial operating system based on OS/2, developed and sold by Arca Noae .
If you insist on bare metal, look for used "Legacy" hardware: Intel Core 2 Duo or 1st-gen Core i-series (Nehalem/Sandy Bridge) with legacy BIOS mode. Do not try to install on a 2024 gaming laptop; it will likely fail due to ACPI and GPU incompatibilities. arcaos 51 iso free
Often, confusion around "free OS/2" stems from the convenience distribution. Many abandonware sites host this ISO for free. However, note: ArcaOS 5
Go to Arca Noae’s website and download the official 30-day trial ISO. It is safe, it works, and it supports the last living breath of a legendary operating system. arcaos 51 iso free