Many thanks to you both - I should have thought to check the initrd.I rebuilt it (mkinitrd -o /boot/initrd.img-<version> for Debian) and that worked, then after I saw Dean's email I let dpkg-reconfigure rebuild the initrd, to be sure it would work after the next kernel upgrade. All peachy.
Thanks again. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html