Category Archives: ArcaOS


ArcaOS 5.0.1 now available

Arca Noae is pleased to announce the immediate availability of ArcaOS 5.0.1, the first maintenance release of ArcaOS 5.0 (Blue Lion).

ArcaOS 5.0.1 is the result of many hours of work to adjust things discovered after the release of ArcaOS 5.0, particularly impacting installation of the operating system. Of course, there are many other post-install fixes included, as well, and these will be made available for separate download as part of the ArcaOS 5.0 Support & Maintenance subscription shortly. In the meantime, a full download of the refreshed media image is required to obtain these fixes and updates.

If everything is working in your current installation, it may be prudent to wait for the subscription content to become available, as Arca Noae has not classified any of the 5.0.1 updates as critical.

If you have experienced difficulty installing ArcaOS 5.0, the fixes and updates included in 5.0.1 may address your issue(s).

For a complete list of updates in this release, see the ArcaOS wiki.

To download your fresh ISO, simply visit your customer portal page, select the Orders & Subscriptions link on the navigation panel to the left, then click on the order for your ArcaOS license. Once there, click the download link to request a fresh ISO, and wait for your notification email.

ArcaOS 5.0: Full support for existing OS/2 applications

Still running a critical application on OS/2? Still have some old, musty Pentium III workstations humming along, and hoping that a power supply doesn’t fail or that the noisy 20GB IDE disk doesn’t develop a bad spot because the workstation can’t recognize anything bigger? Afraid to power it off for fear it won’t start again?

Perhaps it’s time to look at new – yes brand new – hardware for that application. Let’s face it, that app has been around this long because it works. It’s worked all these years just fine. The fact that the hardware is showing its age and the application continues to be useful (critical, in many cases) is a testament to the quality of the software. Why do away with a perfectly good application, just because the moving parts are wearing out?

ArcaOS 5.0 runs all of those great OS/2 applications just like OS/2. Why? Because at its core, ArcaOS 5.0 is OS/2. No emulation. No compatibility mode. Pure OS/2 Warp 4.52 – with updates, fixes, and modifications to be compatible with the latest multi-core and multi-processor hardware available. Replace that old Pentium III with an i5 or i7 or AMD multi-core system, 16 or 32GB of memory, and a 240GB SSD, or move an existing Pentium 4 with 1GB of memory, and a 250GB SATA 3 hard drive from something else. ArcaOS 5.0 has lean hardware requirements, but can take advantage of some of the latest technologies.

Why replace an entire PBX system because the OS/2 workstation which has been storing voicemail all these years is in need of replacement? (We’d call that an often forgotten, yet critical, application.) Move that software onto a new system running ArcaOS 5.0. Need help? Let our team of engineers have a look. We don’t just develop and license software, we design, implement, and manage it, as well.