Category Archives: Arca Noae

USB driver package version 12.04 released

USBArca Noae is pleased to announce the immediate availability of release 12.04 of our USB stack.

This release has both minor and major changes including:

  • Fixed a trap in the USBCALLS driver.
  • Fixed some minor problems initializing devices in USBD.
  • A new USBMSD driver which brings significant stability and reliability improvements.
  • A new USBMOS driver for Moschip based USB to ethernet adapters.

This update is recommended for everyone. As usual, this release is update only. It will only update an existing installation. It will not install USB support and will not install new drivers. More information about the USB drivers can be found in the wiki.

If you have problems with any of the drivers in this release, please read the Troubleshooting Guide in the wiki first. If your problem cannot be resolved with the Troubleshooting Guide, then the problem should be reported in the ticketing system.

If you have ArcaOS, this driver package is available for download from the Arca Noae website as part of the Support & Maintenance subscription for your ArcaOS product. Please log into your account and see your ArcaOS order details page to access your software.

If you have an Arca Noae OS/2 & eCS Drivers and Software Subscription, this driver package is 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.

If you are still running OS/2 and/or eComStation systems and haven’t yet purchased a software subscription, this is a great reason to do so now. It may also be a good time to consider moving up to ArcaOS.

ArcaOS 5.0.4 updates for 2020-02-26

Dynamic IconsSeveral packages included in ArcaOS 5.0.4 have been updated or refreshed today, and are now available as part of the Support & Maintenance subscription for your ArcaOS product. Please log into your account and see your ArcaOS order details page to access your software. Specifically, these are:

  • Dynamic Icons 2.5.2.1 (refreshed)
  • Archive Tool 1.03.03 (updated from 1.0.0)
  • ArcaOS Desktop 1.0.13.1 (updated from 1.0.12+)

In addition, it is now easier to identify which packages have been updated since the last ArcaOS ISO release.

More updates are on the way to the Support & Maintenance subscription channel as we continue our work on the next release of ArcaOS. Watch for more announcements right here.

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. Not sure what’s coming next? Have a look at our product roadmap pages.

ACPI Driver Package version 3.23.13 released

An ACPI packageArca Noae is pleased to announce the immediate availability of our ACPI Driver Package for ArcaOS, OS/2, and eComStation version 3.23.13.

This release contains improved bus bridge fixup logic for systems with multiple busses and a problematic BIOS.  Please see the ACPI Driver ReadMe for details about this update.

This is a non-critical maintenance update that only contains an improvement for specific systems in rare cases. This update is recommended for everyone.

If you have ArcaOS, this driver package is available for download from the Arca Noae website as part of the Support & Maintenance subscription for your ArcaOS product. Please log into your account and see your ArcaOS order details page to access your software.

If you have an Arca Noae OS/2 & eCS Drivers and Software Subscription, this driver package is 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.

If you are still running OS/2 and/or eComStation systems and haven’t yet purchased a software subscription, this is a great reason to do so now. It may also be a good time to consider moving up to ArcaOS.

Dynamic Icons version 2.5.2 for ArcaOS released

Dynamic IconsDynamic Icons, the new spin on Sunny Icons from eCo Software, specifically enhanced and built for ArcaOS, has been updated to version 2.5.2, and is now available as part of the Support & Maintenance subscription for your ArcaOS product. Please log into your account and see your ArcaOS order details page to access your software.

Version 2.5.2 includes a new unified Icon page in the WPS Properties notebook with the ability to easily switch between and browse for either a traditional icon file or a PNG image. In addition, it is now possible to add one-line comments to the “bigicons.txt” icon list file (see the online help from any Icon page for more details).

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. Not sure what’s coming next? Have a look at our product roadmap pages.

What Arca Noae’s upcoming UEFI support means for ArcaOS

The UEFI ForumAs we previously mentioned here, Arca Noae has been working to develop a solution to install and boot ArcaOS on UEFI-based systems. Many of these laptops, desktops, and servers lack a traditional BIOS, rendering them – until very recently – unsuitable for OS/2 (and thus, ArcaOS). Likewise, tablet devices and Chromebooks have been almost beyond our grasp, with very few exceptions.

If you have attended any OS/2-focused events in the past year, you may have witnessed demonstrations of UEFI-based installations of ArcaOS. We are extremely pleased to announce that this functionality is in our betas for ArcaOS 5.1, and should provide a very smooth and similar installation experience to our current system install (DVD, USB, or hard disk partition).

The work is not yet finished, and much remains to be completed, particularly in the area of DOS video support. Our objective, of course, is to have a fully functioning ArcaOS environment on this type of hardware, complete with full screen and windowed DOS and Win-OS/2 sessions. We are very close to accomplishing these goals.

ArcaOS 5.1 will be an upgrade from ArcaOS 5.0. For a more complete list of planned enhancements for 5.1, as well as what’s in beta now for 5.0.5, please visit our ArcaOS Roadmap page.

Don’t have ArcaOS yet? Now is a great time to pick up a license or two and replace that aging Warp 4 or eComStation installation and get to know what’s new and improved. ArcaOS runs the vast majority of existing OS/2 Warp 4 software, because it really is OS/2 – just better. ArcaOS supports more modern hardware than any other OS/2 distribution available today, making hardware upgrades much easier than ever before. An ArcaOS 5.0 license now means steep discounts on future upgrades, including 5.1.

Arca Noae progress report: ArcaOS in your language

Translation work continues for ArcaOS. General availability of German and Spanish editions of ArcaOS are anticipated for the 5.0.5 release, with more languages slated to follow. We are making tremendous strides toward achieving the goal of a non-English reader to be able to install and run ArcaOS with minimal effort.

Translators are invited to join a core team working on the project. If you have the linguistic skills, enjoy a challenge, and would like to participate in a truly fun and rewarding endeavor, please let us know. Translators automatically become members of the test team, with early access to development releases (among other benefits).

Potential localized versions of ArcaOS include:

  • German
  • Spanish
  • French
  • Italian
  • Dutch
  • Portuguese
  • Japanese
  • Chinese (Simplified)
  • Chinese (Traditioinal)
  • Korean
  • Russian

(This is by no means a promise to deliver any of the above. Partial work has at least been done on most of the above translations, however.)

Need a language not listed above? Need one of the above languages completed sooner? Talk to us about specific localization needs for your enterprise.

Don’t have ArcaOS yet? Now is a great time to pick up a license or two and replace that aging Warp 4 or eComStation installation and get to know what’s new and improved. ArcaOS runs the vast majority of existing OS/2 Warp 4 software, because it really is OS/2 – just better. ArcaOS supports more modern hardware than any other OS/2 distribution available today, making hardware upgrades much easier than ever before.

Public services back online

Our Mantis bugtracker is back online, email announcements are running, and we are able to build new ArcaOS images for immediate delivery.

There is still work to be done, but for customers and subscribers, things should be back to normal.

Thanks to everyone for being patient and supportive through this trying time.

We are currently experiencing server issues

Our sincere apologies to anyone attempting to access our bug tracker or waiting for email from the store. We suffered a server hardware failure overnight and are working diligently to restore services.

No email is flowing, so no new order notifications are being sent, however, it is still possible to place orders and to download some content. Renewing subscriptions is still possible, though as with all other orders, email delivery of receipts will be delayed.

If you have placed an order for a new ArcaOS license or have requested a fresh download, those ISO builds will be delayed until services are available.

Arca Noae progress report: USB, ArcaOS updater, multimedia

Here are some of the recent happenings around the Arca Noae labs and design studios:

We’ve recently made significant progress toward localizing various parts, particularly for German and Spanish, and will soon have a new test build of the CWMM classes in Spanish (a completely new translation for this component).


We continue to improve the update process for the next ArcaOS release, as we find edge cases where the current updater doesn’t quite finish due to unexpected conditions in the target system. (As a reminder, please check the ArcaOS Updating wiki page before beginning an update to the latest release. There you’ll find hints and tips to help avoid – or resolve – some known problems.)


When IBM left off USB driver development, OS/2 had a working, 16-bit USB 1.x and 2.0 driver stack. Fast forward to 2019, and this is no longer adequate for the needs of today’s hardware.

The Arca Noae USB stack is now fully 32-bit, and USB 3 support development continues to make good progress. Implementing USB 3 support has been tedious because the OS/2 USB architecture didn’t accommodate the peculiarities of USB 3 well.

Adding USB 3 support was not as simple as just writing a new xHCI driver. Significant changes were required throughout the entire USB stack, including changes to USBD and the OHCI, UHCI, and EHCI drivers. The xHCI driver as it exists today in beta testing works quite well. There are just a couple of things that still need to be done before we will be able to release it for general availability. One thing is to implement support for Isochronous transfers (audio and video devices). The second thing is to improve the error recovery speed. Error recovery speed was not an issue with USB 2 because USB 2 devices rarely, if ever, had errors. Super Speed (USB 3) devices operating at the new USB 3 speeds have higher error rates so the error recovery speed is important. We are actively working to resolve these last two issues.

Once the xHCI (USB 3) driver is released, the Arca Noae USB stack will make it possible to install and run ArcaOS on systems which lack USB 2.0 (EHCI) controllers. (Even though many modern systems advertise the availability of USB 2.0 ports, these ports are indeed wired to xHCI controllers. Without an xHCI driver, this will result in loss of keyboard and mouse control shortly after boot and the inability to mount the installation ISO from USB-attached media.)


Don’t have ArcaOS yet? Now is a great time to pick up a license or two and replace that aging Warp 4 or eComStation installation and get to know what’s new and improved. ArcaOS supports more modern hardware than any other OS/2 distribution available today, making hardware upgrades much easier than ever before.