If the hardware and operating system are not compatible like a Windows compatible computer and an Atari or Amiga OS. The computer will not load or be able to do any work. It will sit at the initial prompt and ask for an operating system.
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Same thing with programs. If you try to run a program on Windows that is designed to run on another platform it just won't run.
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Same thing with programs. If you try to run a program on Windows that is designed to run on another platform it just won't run.