Last night I took an IBM 9GB SCSI disk in an external case with 
NetBSD/macppc loaded on it, and attempted to boot my PowerBook 
G3/300. After some trouble getting OF to come up (yes, just as the 
FAQ says, the timing is tricky), I asked it to:

	boot scsi/sd@0:0

The secondary booter came up, loaded the GENERIC kernel, and then the 
kernel said it couldn't find the root FS, and asked me. When I told 
it the canonical stuff (sd0a for root, sd0b for swap, FS type "ffs"), 
it said:

	mesh: timeout state=3
	cannot mount root, error=22

That EINVAL (invalid argument) from errno.h.

We list this model of PowerBook as a supported platform. What did I do wrong?

	Erik <fair@clock.org>