On 12/31/2014 5:12 PM, Kevin O'Connor wrote:
> On Wed, Dec 31, 2014 at 03:50:09PM -0800, Ralf Quint wrote:
>> A better spend time (and money?) would be to convince someone at the SeaBIOS
>> project to help providing an (U)EFI boot stub, upon which a "classic" 16bit
>> FreeDOS then could boot just "like in the old days" on the newest systems...
> FYI, there is a mechanism for UEFI systems to support 16bit code -
> it's called a Compatibility Support Module (CSM).  SeaBIOS does
> support being compiled as a CSM and is known to work under a VM and
> I've been told it's been run on real hardware as well.  I don't know
> if anyone has done that outside of a "lab environment" though.
>
> Most commercial UEFI installs I thought had a CSM, so I'm surprised
> that you're having problems booting DOS on them.  Unrelated to UEFI, I
> regularly boot to FreeDOS on my chromebook and coreboot motherboard
> with SeaBIOS for testing purposes.  I haven't seen any signs that
> modern hardware intrinsically can't handle freedos.
>
I checked just about a week ago and there was very little info about 
booting DOS (or any other effected OS,beside Linux) using a SeaBIOS 
stub. Yes, some VM working was mentioned, but that is not what the issue 
is with "running on a modern system". The last time I tried (with very 
little time due to work) a few month ago, the SeaBIOS stub would not 
come up properly, didn't get around to test with Windows 2000, which was 
the goal to get this working for a customer with a proprietary piece of 
software and non-cooperative "state of the art hardware". Ended up 
buying and using a used Dell from eBay...

But getting something along these lines working seamlessly for FreeDOS 
would be IMHO by far making more sense then all this "32bit (Free)DOS" 
stuff...

Ralf

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