Daniel> from CD or floppy? If so, how does the kernel on CD know that the root 
Daniel> filesystem is on ld0a?

type devalias on OF promt and you will find the cd drvie:
if it is on scsi bus with id=3,

0 > boot scsi-int/sd@3:0 /pci1/dac960/sd@8:0/netbsd

will read sector 0 and secondary loader from scsi-int/id=3 device
and read kernel from  /pci1/dac960/sd@8:0/netbsd.

But is it really sd@8:0 ? RAID has scsi id over 6 ?
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Makoto Fujiwara,