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Fio works on (at least) Linux, Solaris, AIX, HP-UX, OSX, NetBSD, OpenBSD,
-Windows and FreeBSD. Some features and/or options may only be available on
-some of the platforms, typically because those features only apply to that
-platform (like the solarisaio engine, or the splice engine on Linux).
+Windows, FreeBSD, and DragonFly. Some features and/or options may only be
+available on some of the platforms, typically because those features only
+apply to that platform (like the solarisaio engine, or the splice engine on
+Linux).
Some features are not available on FreeBSD/Solaris even if they could be
implemented, I'd be happy to take patches for that. An example of that is