On Wed, Aug 3, 2011 at 4:19 AM,  <c...@bttr-software.de> wrote:
> You can't dual-boot multiple FreeDOS instances on the same partition,
> because you can't configure the kernel to use one specific (FD)CONFIG.SYS.
> Therefore, you have to change the file name the kernel will look for. If
> you can compile the kernel yourself, search through its source code for
> where the FDCONFIG.SYS name is used and change that.
>>> Does anyone else here have a method that would allow multiple installs
>>> of
>>> FreeDOS (1.0, 1.1), MS-DOS, or Windows 95/98 to co-exist in the same
>>> partition?
>> MetaKern should probably do it, I hope, but you'll have to read the
>> docs and experiment.
> Metakern allows booting multiple kernels, but if you boot a specific DOS
> variant multiple times, each group will again use the same *CONFIG.SYS
> unless you hack that file name in (some of) the kernel(s).

Okay, it's hard to understand what he wants and why. I noticed that he
mentioned MS-DOS / Win9x, so I assumed he meant share that with
FreeDOS (which makes more sense, practically, than otherwise).

There's really no reason to run FD 1.0 and 1.1 side-by-side.
Presumably you don't want to run separate (old) utilities from 1.0
anyways. So that part should stay the same, IMO.

So basically you're only sharing the kernel, but even that (in theory)
shouldn't be needed. So unless you know of specific apps (or just want
to test) that need a specific kernel (2037?), I wouldn't bother. But
KERNEL.SYS is really the only file to worry about (shell should be the

In short, if you want to dual boot between FreeDOS versions, you're
basically only worrying about the kernel. In that case, a simple "ren
kernel.sys kernel2.sys" and "ren kernel3.sys kernel.sys" should do it
(and reboot, of course). Would this be a good time (doubtful) to
suggest "XCHG" as a mnemonic for swapping filenames?   ;-)

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