[Coco] Drivewire 4: nos96809l1v030209coco2_dw3.dsk format??

[Chad H]

OK I found this .DSK image on the DriveWIre 4 Downloads page thought it
would be what I need on my CoCo2 to run NOS9 with DriveWire 4.  However I
haven't been able to get it to even boot yet.  I tried loading it into
DriveWire 4, Drive 0 and DOS into it.after "NitroOS9 Boot" it goes to
garbage.  Same thing when I DISKINI'd it real floppy.  Then I realized it's
a 433k image.  I tried writing it to a physical floppy as a double-sided
disk.  Now when I issue DOS command, I just get "OK" right back.  Can
someone tell me the specifics on this image as to  tracks/sides, etc and
whether its intended for "real" floppy use or loaded into DRiveWire?