DragonFly can see my hard-disk partitions but can't mount any, for whatever reason.
Also, DragonFly gives me no Internet access on my hardware.
DragonFly file systems seem to be unmountable/unreadable from FreeBSD and NetBSD.
Accessing GPT partitions is easier in Linux and even better in FreeBSD. Partitions can be labeled, nothing sneaky about partition/wedge numbering, and device nodes are created dynamically instead of having to be preallocated.