> I've just started playing with MacBSD, and seem to have already messed
> something up! I tried to shutdown the system, but the shutdown command
> wouldn't work (it wasn't recognized)

That's odd...

> Can't open /dev/rs2da: Device not configured
> /dev/rs2da: CAN'T CHECK FILE SYSTEM.
> /dev/rs2da: UNEXPECTED INCONSISTENCY; RUN fsck MANUALLY

I assume you mean /dev/rsd2a, not /dev/rs2da.  Do you have a SCSI device
other than a disk between sd0 and sd2 (like a CD-ROM?), or was one of
your hard disks not powered up when you booted?  Take a look at the
device assignations during boot.  NetBSD prints out "sd2: ... " when
probing the bus, so you can double check to see which disk gets assigned
where.  If you are still stuck, drop me a line describing what NetBSD
prints while booting, and what you've got on the SCSI chain.

-allen

-- 
Allen Briggs - end killing - allen.briggs@bev.net ** MacBSD == NetBSD/mac68k **
   Where does all my time go?  <a href="http://www.netbsd.org/">Guess.</a>