Scritcheur

The Scritcheur is a file cutting tool, you can cut any files to any size you want and it's very easy to use

To cut a file, just drop it on scritcheur.exe and then it'll prompt you which size do you want to cut file, 15Mo packets, 1.44Mo packets or free size packets, if you chose free size, you'll be able to define the packets size in bytes

Once cut, it'll generate a .c00 file and .cNNNNN files, these are the cut packets, to rebuild your original file, just drop the .c00 file on scritcheur.exe and it'll rebuild your original file (every .cNNNNN files must be into the same directory as .c00 file)