"Patrick Welche" <prlw1@newn.cam.ac.uk> writes:
> I think you did install the NetBSD bootblocks to the beginning of the
> NetBSD root partition. The question is, did you re-install os-bs? I am

That's not needed. OS-BS lives in the MBR, and the NetBSD boot blocks
live in the NetBSD partition. You can reinstall NetBSD boot blocks
over and over without ever touching your boot manager.

Perry