Baslinux mailing list

[sindi keesan <keesan AT sdf.lonestar.org>]

On Fri, 5 May 2006 3aoo-cvfd AT dea.spamcon.org wrote:

> sindi keesan wrote:
> > > -------------------------
> > > dd if=/dev/fd0 of=dos.img
> > > -------------------------
> > This will produce a 1.47MB image, right?
>
> It depends on the size of the floppy in /dev/fd0.
> You will get a floppy image.  If the floppy is
> bootable, the image will be bootable.
>
> > > Then activate qemu and do:
> > > -----------------
> > > qemu -fda dos.img
> > > -----------------
> > This boots from a floppy disk image on hard drive?
>
> It does a floppy-boot of dos.img.  If dos.img is a
> bootable floppy image, it will work.  If dos.img is
> not a bootable floppy image, it won't.

Since I can mount the DOS partition(s) I should be able to boot from a 
720K DOS floppy boot disk with only the essentials on it, whatever file 
are called for by autoexec.bat and config.sys (doskey, himem.sys, maybe a 
CD-ROM driver).  We had been trying to fit a few programs into that disk.

> > Can I make some image like the one I downloaded which
> > will boot with qemu dos.img from the hard drive?
>
> You could use dd to make a HD image (just like you did
> to made the FD image).  The if=  parameter is /dev/hda
> (or b or c or d) instead of /dev/fd0.  Please note you
> do the entire HD, not just a partition.  I suggest you
> do this with a very old HD (80mb, 120mb) -- otherwise
> you end up with a very large file.

No need for this if I can access the hard drive after booting.
I would rather run DOS from a non-booting partition so I can access it 
from linux (which I don't think I can do to the image file while 
qemu is using it).

I will try this after we replace the non-booting computer, or maybe it 
will boot again tomorrow.

> Cheers,
> Steven
>
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keesan AT sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org