Driver updates now available

MultiMacWith the release of ArcaOS 5.1.2, several drivers have been updated. These updates are already included in ArcaOS 5.1.2, but if you are not updating to ArcaOS 5.1.2 you can still take advantage of some of the new driver updates. They are now available as part of the Support & Maintenance subscription for your ArcaOS product, and in the Arca Noae OS/2 & eCS Drivers and Software Subscription, Please log into your account and visit your Download & renewal center to access your software. Specifically, these updated packages are:

  • USB 12.18 (updated from 12.17)
  • NVME 1.03 (updated from 1.02)
  • ACPI 3.23.19 (updated from 3.23.18)
  • AMouse 4.02 (updated from 4.01)
  • Panorama 1.21 (updated from 1.20)

These releases include minor fixes and enhancements over their previous versions, and while recommended, they are not considered critical updates. Again, if you have updated to ArcaOS 5.1.2, you already have all of these updates. Here are the highlights of what’s new:

USB v12.18

  • USBAXGE – Enhanced to work with newer AX88179 chips.
  • USBASIX – Reliability updates.
  • USBMOS – Reliability updates.
  • USBSER – Fixed baud rate calculation for F232 chips

NVME v1.03

  • Fixed a rare trap when running multiple NVME controllers.

ACPI v3.23.19

  • Enhanced Power Manager to work better on systems with many CPUs.

AMouse v4.02

  • Added some command line switches

Panorama v1.21

  • Fixed an EDID problem when running the installer.

If you are still running OS/2 and/or eComStation systems and haven’t yet moved up to ArcaOS, this is a great reason to do so now. If you’ve already made the switch, but haven’t renewed renewed your support subscription, this is also a good time. Thinking of upgrading your current ArcaOS 5.0 installation? Now is also a good time.

If you have an Arca Noae OS/2 & eCS Drivers and Software Subscription, these driver package are available for download from the Arca Noae website as part of your Arca Noae OS/2 & eCS Drivers and Software Subscription. Please log into your account in order to access your software.

ArcaOS

ArcaOS 5.1.2 now available

Arca Noae is proud to announce the general availability of ArcaOS 5.1.2 in English, German, Spanish, and Russian.

ArcaOS 5.1.2 improves the support for installation on the latest generation of UEFI-based systems, as well as the ability to install to GPT-based disk layouts. This enables ArcaOS 5.1.2 to install on a wide array of modern hardware. As with all ArcaOS releases, ArcaOS 5.1.2 still boots, installs, and runs well on traditional BIOS-based systems, offering enhanced stability and performance for either environment.

This release is free of charge to those with active ArcaOS 5.1 Support & Maintenance subscriptions, and there is no charge for requesting additional language ISOs (though your total number of ArcaOS 5.1 installations may not exceed the number of ArcaOS 5.1 licenses you have).

ArcaOS 5.1.2 can be used for new installs or to upgrade any prior English version of ArcaOS 5. If installing from USB stick, the USB install stick may be created using any major operating system at hand (Windows, Linux, MacOS, and of course, OS/2, eComStation, and ArcaOS). Once built, the USB stick can be inserted into any USB port in the target system to boot into the ArcaOS installer/updater in either UEFI or traditional BIOS mode (alternatively, the DVD image may be burned to physical media and also booted to either UEFI or traditional BIOS systems). See the wiki for specific notes and limitations of the USB stick creation utility on Windows.

For a complete list of updates in this release, see the ArcaOS wiki. Be sure to review the README.TXT, as well, as this contains critical information to ensure that you get up and running fast, and includes tips for getting things adjusted right away.

This upgrade is available at a steep discount with your valid ArcaOS 5.0 Support & Maintenance subscription (and your remaining subscription time will be added to the included support term). To download your fresh ISO, simply visit your customer portal page and select the Download Center link on the navigation panel to the left. From there, click the “Upgrade to 5.1” button, and proceed to checkout.

If your ArcaOS 5.0 Support & Maintenance subscription has already expired, you may still upgrade at less than the cost of a new ArcaOS 5.1 license. Follow the procedure above to order your upgrade, and the discount will be reflected in your cart.

New ArcaOS 5.1.2 license purchases are initially built as English. To request a different language, simply visit your Download Center, select the Build ISO Again button, and choose your language.

Need more convincing? How about a commercial operating system which doesn’t spy on you, does not report your online activity to anyone, and gives you complete freedom to choose the applications you want to use, however you want to use them? How about an operating system which isn’t tied to any specific hardware manufacturer, allowing you to choose the platform which is right for you, and fits perfectly well in systems with less than 4GB of memory or even virtual machines?

Arca Noae is committed to continuing the development, support, maintenance, and refinement of the OS/2 platform. The next release of ArcaOS is indeed already in the works. The future continues to look bright for Arca Noae and ArcaOS!

Arca Noae Package Manager version 1.1.2 has been released

Arca Noae is pleased to announce the immediate availability of an updated Arca Noae Package Manager for ArcaOS, OS/2, and eComStation. (1.1.2)

This release addresses the following issues:

  • Replace DLL conflict check logic to avoid problems if an exception occurs in the DLL’s exit routine (requires included testdll.exe). (Previously, this condition could lead to a complete system hang during package installation or update.)
  • Redesigned UI presentation of available WarpIN packages.

Arca Noae Package Manager is available in English with Spanish, French, Italian, German, Dutch, Russian, and Swedish language packs. Language packs are on a rolling release cycle, with updates made available between program releases.

ANPM 1.1.2 requires WarpIN 1.0.24 or higher for installation. This WarpIN package is available from Hobbes Archive.

This utility is licensed under the GPLv3, and is available to everyone, free of charge. See the included documentation for instructions on how to access the source code.

Please review the wiki for important first-time installation and upgrade notes and other tips.

Major website migration complete

To address unanticipated changes forced upon us by functional components used by our website and online store, we have migrated the main Arca Noae site to a different server on our network. We hope this solves the most pressing issues regarding site availability, performance, and checkout completion.

Meanwhile, this migration brings with it some changes to procedures, namely, population of subscription content lists in the Download and Renewal Center. The new process will refresh content for all subscribers over a longer period of time vs on-demand download of fresh driver packages (as an example). The change should be fairly transparent to the end user (when a download link is displayed, it will be functional, as before), but note that there may be some delay between the announcement of new or updated content and downloads actually being listed. We are continuing to work to improve this feature.

For all those who have experienced difficulty with renewals, for a limited time, we have extended the normal grace period to one full year before the late renewal fee is applied. This should give everyone ample time to renew his or her ArcaOS Support & Maintenance subscription(s) without concern. This is a limited time offer, however, so if you have been holding off on a renewal due to site frustrations, please do so now at your earliest convenience.

Website issues impacting new and renewal orders

Our most recent website updates (mandatory, for security reasons) seem to have led to some instabilities. We have worked to manage the situation while we continue to solve the underlying problem(s). In the interim, customers may experience intervals of exceptional slowness on the site and there is a potential for failed payment processing.

We apologize for the inconvenience. If your order fails to process, please try again.

Meanwhile, we believe we have solved the issue with renewal orders not properly displaying the required credit card input fields for payment. Renewal orders should add the renewal to the cart and land on the Shop page. From there, proceed to checkout. If you find that your link has taken you to the checkout page directly, select the link there to visit your shopping cart, then use the Proceed to checkout button (or use the Renew button for your subscription from your Download Center).

At times, changes to our website are forced upon us by the software developers, generally in response to a security concern. It is impossible to predict how an update to one facet of the site may impact something else. We do our best to handle these situations when they arise, and appreciate your patience.

Warpstock hotel room block is closing

As reported here previously, Warpstock, the annual gathering of OS/2 users, developers, engineers, and enthusiasts is scheduled for Friday, November 7 through Sunday, November 9, 2025 at the Holiday Inn Little Rock Airport Conference Center in Little Rock, Arkansas, USA.

Among those scheduled to present live are Arca Noae Managing Member, Lewis Rosenthal and Dmitriy Kuminov, CPO of bww bitwise works, GmbH, an Arca Noae strategic partner.

The hotel room block for this year’s event will be closing October 5, so be sure to register for the event and to book your hotel stay soon.

For more information regarding planned sessions and for details on the event, please visit the Warpstock 2025 event page.

Warpstock is an annual event hosted by Warpstock Corporation, a 501(c)3 non-profit organization unaffiliated with Arca Noae, whose volunteers are dedicated to promoting education, information, and social opportunities to those persons interested in computer operating systems and related software.

Warpstock 2025, Little Rock, AR - November 7-9, 2025

Learn, share, contribute at Warpstock 2025

Warpstock, the annual gathering of OS/2 users, developers, engineers, and enthusiasts is scheduled for Friday, November 7 through Sunday, November 9, 2025 at the Holiday Inn Little Rock Airport Conference Center in Little Rock, Arkansas, USA.

Arca Noae Managing Member, Lewis Rosenthal, will be on hand to present not only his annual roadmap update, sharing things planned for the next releases of ArcaOS, but also to moderate an OS/2 quiz to test the depth of knowledge of the audience. Of course, there are several other sessions scheduled, with likely more to come.

If you’ve never attended a Warpstock event, you’re in for a treat. In addition to knowledgeable speakers and the ability to take them aside to bend their ears about what you’d like to see in terms of improvements to the operating system or new applications, there is plenty of time to socialize with like-minded people, and put faces to names of people you may recognize from online interactions. You literally never know who may turn up at Warpstock!

Register now to take advantage of the early bird discount, and get an even better deal on this conference (which is already a great value for the information and opportunities it provides each year).

Warpstock is an annual event hosted by Warpstock Corporation, a 501(c)3 non-profit organization unaffiliated with Arca Noae, whose volunteers are dedicated to promoting education, information, and social opportunities to those persons interested in computer operating systems and related software.