Personally I think that either this guy did something incorrectly or
there's a Windows 3.1 bug. Meanwhile, Rafael's Linux-based OS is going
to boot from this floppy like it's a ramdisk, so hopefully should be
indifferent to the custom floppy sizes and would work. I share the
same hopes for KolibriOS: although its' 1.44MB floppy contains really
a LOT of stuff, some cool things like console emulators didn't fit -
so I'm going to create the extended Kolibri floppy version, which will
be either 2.88MB or some custom ( 1.44MB * X ) size.

On Sun, Apr 14, 2019 at 6:12 PM Kevin O'Connor <kevin@koconnor.net> wrote:
>
> On Fri, Apr 12, 2019 at 11:38:52AM -0700, Rafael Send wrote:
> > Hi,
> > I'm working on stuffing a bootable Linux distro into coreboot.  In QEMU I
> > already succeded by using coreboot's built-in kernel loading mechanism, but
> > that's without SeaBIOS.
> >
> > I'd love to have it as a SeaBIOS payload so I can also boot other things,
> > but I guess I'd have to create a custom-sized floppy image for this or
> > figure out how to create an ELF payload out of a Linux kernel (I'm open to
> > either, but I wasn't able to find any documentation on the ELF method).
> >
> > The guy who put Win 3.1 in coreboot attempted the floppy method, but
> > according to his article he did not find success with this method due to
> > unknown and complex issues in the floppy-side logic of SeaBIOS.
> >
> > So, I'm making the question explicit: What would it take to support
> > custom-sized floppy images? In particular, I'm thinking of a 16MB device...
>
> My vague recollection is that various OSes had hard coded expectations
> on the types of floppy drives supported.  I did not think it would be
> easy to support a floppy size larger than 2.8MB.
>
> It is possible to emulate a hard drive in memory.  However, that would
> require code changes.
>
> Cheers,
> -Kevin
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