> I've been having troubles with filesystem corruption soon after
> booting on my Powerbook 180, using the NCR driver.  When I switched
> to the SBC driver, it rendered the thing unbootable for some reason.
> I'm using an EZ135 as my NetBSD boot drive.
> 
> Anybody have any suggestions for fixing this?

Do you mean that the machine simply won't boot at all: i.e. no MacOS
or anything?

It may have simply messed up the PRAM or something. Try zapping the
pram.

Just a guess. Hope it helps.