I think I must be missing something but I can't for the life of me figure 
out what it is so any help would be appreciated. 

System
 ------
A SparcStation5 running the 2.0 release.  It has 2 4.5GB SCSI drives that I 
am trying to form into a RAID1 set using RAIDFrame.  This RAID set will 
contain all disk storage for the system.  This system is merely being used 
as a house router (and RAIDFrame testbed) so there's no important data on 
it. 

My Issue
 --------
I have been reading through The NetBSD Guide and am attempting to go through 
the process in Chapter 15 of setting up a RAID1 root partition (I'm setting 
up /usr as well but that's just an add-on).  I have made it all the way 
through setting up the RAID set with just one disk in it and am now at the 
point where I have to install a boot sector on the raw partition of the RAID 
disk (15.3.7).  I cannot for the life of me get installboot to work.  The 
command line I'm using (per the Guide) is: 

installboot -v /dev/rrsd1a /usr/mdec/bootxx 

This fails complaining that it needs to know about a second stage boot.  So, 
I modify the command line to be: 

installboot -v /dev/rrsd1a /usr/mdec/bootxx /boot 

And installboot complains that I need a "-B bno" flag. 

How does sysinst make my initial disk bootable?  Any help would be greatly 
appreciated (and perhaps the Guide needs to be updated?). 

Thanks in advance.. 

Nate