No good reason for Stop-a vs. halt.  Shutdown and reboot commands  didn't 
work.  I should try halt.
 
I had trouble creating a netbsd bootable install CD, so I:
1) b sd(0,30,3) with the original sunos 4.1.1 bootable cd
2) used the sunos procedure to copy the sunos miniroot to /dev/rsd0b
3) b sd(,,1)-s into the sunos miniroot, then used it to mount the netbsd  
cdrom, and copy the netbsd miniroot to /dev/rsd0b.
4) stop-a
5) b sd(,,1)-s into the netbsd miniroot, which blew up with the netbsd  
2.0.2, 2.1, 3.0, 3.0.1 miniroot, but worked with the netbsd 1.6.2.  miniroot.
 
>From what you're saying about rsd0b being unused, it seems that the above  
may be invalid steps, because the after booting into /dev/rsd0b with the  sunos 
miniroot, I can't then copy the netbsd miniroot directly ontop of  /dev/rsd0b?
 
Maybe I just got lucky with netbsd 1.6.2 miniroot that it didn't get  
overwritten by the currently active sunos 4.1.1 miniroot writing to rsd0b, but  
netbsd 2/3 miniroots are bigger or use different portions of rsd0b that did get  
overwritten.
 
thanks for the tips,
arthur
 
 
---
 
In a message dated 9/14/2006 2:32:15 P.M. Eastern Standard Time,  
tsutsui@ceres.dti.ne.jp writes:
> >How-To-Repeat:
> dd the  miniroot to /dev/rsd0b then stop-a, b sd(,,1)-s

Why stop-a, not  halt(8)?
Are you sure sd0b is unused on dd'ing miniroot?

Looks written  kernels broken.