Noriyuki Soda sez:
# > I'm experiencing a problem on a machine that I'm setting up. I'm
# > getting 'not queued, error 5'. I think that this has something to do
# > with the lack of SCB's on the SCSI card (AHA 2742AT)
# 
# Your guess is correct.
# Current ahc driver fails to handle simultaneous access more than 2
# scsi devices on NetBSD with AHA-2740/2840. (FreeBSD doesn't have this
# problem)

This would also mean, then, that fsck -p will fail.