Can Linux be used to create a bootable USB flash drive with the freedos OS?

I have a DOS based HDD utility called spinrite. I want to create a bootable flash drive with the freedos OS and once created copy into the drive the executable utility. I tried using gparted to partition the drive, formated it as Fat32 and set the Boot flag. once done I cannot see how to install the OS and add the executable. I have an image file of Freedos, if I try making the flash drive with it then it's not bootable. Any help is greatly appreciated.