instructions for creating a dos-bootable .img file

Get the msdos.sys/io.sys/command.com from a Win95 or Win98 boot disk.

dd if=/dev/zero of=floppy288.img bs=1024 count=2880
/sbin/mkdosfs floppy288.img
ms-sys -1 -f floppy288.img
su
mount -o loop floppy288.img /mnt
cp msdos.sys /mnt/
cp io.sys /mnt/
cp command.com /mnt/
umount /mnt

To test it, use qemu:

qemu -fda floppy288.img

HOWTO make a floppy image bigger than 2.88mb:

• get an existing .img file (perhaps using the above)
• use newmkfloppyimg.sh to extend it to several megabytes (up to 10mb?)
  (background info)
• when loading the .img with MEMDISK, use the cylinder/sector/head parameters that mkfloppyimg.sh printed out. They look something like:
  memdisk floppy c=8 s=32 h=64 /images/floppy.img
• ... for more information on the cylinder/sector/head paramters, see the "fdgeo.pl" file within the SYSLINUX source tarball, or these: [1] [2] [3] [4a] [4b] [oversize.zip]

HOWTO make a hard-disk image that MEMDISK can load:

• see here
• or here
• or here