OSDev.org

Lets say you want to create an file of size N for use as an image of a floppy or harddrive et.c. On linux you can do this with dd and /dev/zero but on windows I didnt found a simple way until i discovered fsutil. Do something like this to get an file the size of a floppy.

fsutil file createnew myfile.img 1474560

Then you can just copy your bootloader and kernel onto this file. I found that there exist a version of dd for windows which is a bit more powerful than partcopy for this task but either program would work ok. The address to dd for windows is:

http://uranus.it.swin.edu.au/~jn/linux/rawwrite/dd.htm

See ya!

You could just try cygwin, which includes dd by default?

[edit] Almost forgot, that's still a TIM-bot notification [/edit]

I think that winimge does make my life easy.
when a file system is present of the image ;D

BxImage comes with BOCHS and can make big images.
Filedisk for Windows allows you to mount the image as a drive letter, format it and install GRUB.