But remember how we used to have a bunch of bootloaders and kernels that were #MSDOS programs, so that #DOS could initialize the hardware for it (eg: syslinux)? That's the #Plan9 1e process; run `b.com` from DOS, and that will load the `9dos` kernel.
And unlike Solaris 2 or RISC/os or whatever, #FreeDOS is #FreeSoftware and is easy to get running in #Qemu.