If you are into retro computing and need to copy one of the old floppy .img disks to a diskette then it can be done with dd for unix/linux or by using the windows port of dd
In my case i had 2 computeres with a floppy drive, one was a Windows XP machine and the other was a much older DOS computer without USB or network and i need to test FreeDOS and MS DOS 6.2 but i only had files like disk1.img downloaded from the internet and blank 1.44 floppy disks.
In my first attempt i tried to use a Windows program called winimage but it was not able to run on the old Windows XP, maybe it needed a servicepack or somthing else, so the fastest way was to find a simpler and faster solution and dd came in to my rescue.
here is How to copy a disk.img to floppy with dd
dd if=disk1.img of=/dev/fd0
Windows (DOS or CMD Console)
dd if=disk1.img of=\\?\Device\Floppy0
It can be downloaded at http://www.chrysocome.net/download
OR from my server https://www.pvangsgaard.com/download/dd-windows/