Just in case any one is interested, please find the answer that Leif =
Ekblad (RDOS author) kindly gave me:
"I think it might be kind of problematic to run RDOS in virtual
environments. Both Bochs and Virtual PC have bugs in them that make RDOS=
fail. I'm not sure about virtual box. I think the best alternative is a
multiboot with GRUB, but then you should run it on some hardware that
doesn't contain a lot of important stuff, or make sure you don't load di=
drivers (at least to begin with).
You are right about SVN. You need to check-out trunk from SVN, and then
build the targets in rdos/kernel (they have one IDE-file each). Don't
build the /rdos/kernel/boot directory as I think there is a bug in the
newest OW related to the grubload.bin file (the binary is already checke=
into SVN). After that, you should build rdos/classlib/rdos and
/rdos/classlib/win32, and then the applications (at least you need to
build rdos/apps/freecom). Then you need to build the binary file builder=
After you have built the source, you need to create a config-file for yo=
hardware. There are a lot of examples in the /rdos/board directory. Most=
of them also contains a mk.bat file for building the binary. For new
hardware, something like cq57 or vaio-i3 would be a good alternative to
Then you can follow the installation guide for GRUB on rdos.net (it's
If you want to try VirtualBox, your best bet probably still is to create=
bootable GRUB image, and then add a section for RDOS + the actual files.=
We deploy new systems with USB-sticks, however the first issue is how to=
create the initial bootable USB stick, which must be done from the RDOS
command-line with loaded support for USB discs.
If you have Partition Manager and CF discs, you might use the ready made=
images in the rdos/paragon directory.
En Wed, 03 Sep 2014 09:22:46 +0200, Javier Guti=E9rrez =
> I am just curious about new features on OpenWatcom 2 being able to =
> target RDOS.
> To be honest, when reading about it, I got impressed. Certain level of=
> DOS compatibility, 32 bit, multitasking and multithreaded, and better =
> performance than original DOS.
> It seems a very good replacement. I plan to install it in a VirtualBox=
> machine, but I am a bit lost. Available binaries are from 2006 or so, =
> while on the SVN repository it has been lots of updates since then. In=
> fact latest commit is less than one week ago.
> So i guess, I should build it from the sources, and them somehow creat=
> an ISO image to install in the VM.
> Any hints? Any available pre-compiled binaries or pre-built images?