I am making an operating system based on ms-dos and using a program called win image to edit an ms-dos .img file, the program only lets me inject at total size of 2.88mb worth of files
and i would like to inject an unlimited amount of files into my ms-dos based OS img file.


1 Answer 1


The 2.88 mb comes from a double density diskette. A normal diskette is 1.44 mb.

See if you can change the image type to something other than diskette, such as a Zipdrive disk (100 mb) or a Jazzdrive disk (1 gb).

Do note that msdos likely only can boot from either a harddisk image or a diskdrive image.

  • On a PC "double density" usually refers to diskettes up to 720k. 1.4Mb is high density and 2.8Mb is "extended" or "extra-high" density.
    – john_e
    Commented May 14, 2018 at 22:18

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