> Looking more closely at all this, the only difference I can see between
> my setup and the one in the NetBSD guide is that /dev/raid0a begins
> at 63 in my setup instead of 0 in the netbsd guide setup.  Is
> this the source of the problem, or is there something else I'm
> not taking into account?

That looks like the problem.
There is no need to reserve the first track of the raid set.

The raid set is only bootable if the root filesystem is in sector 64 [1]
of the underlying disk partition.

	David

[1] the size of the raid header.

-- 
David Laight: david@l8s.co.uk