"Missing Operating System"

Boot Runner
1

Bootcamp is working perfectly with the reboot from OS X. With bootrunner 3.02, Mojave 10.14.6, I see the message in question. What can I do? Thank you.

2

It is possible it is selecting the wrong boot type. Try change the boot type using a profile:

  1. Force boot type – Normally, Boot Runner 3 will detect the style of booting for selected volumes. However, if you want to override these settings, specify a boot type

from https://twocanoes.com/knowledge-base/boot-runner-3-setup-guide/

tim