Mod Edit: Split from https://www.bleepingcomputer.com/forums/t/500956/dual-boot-from-2-separate-hdds/#entry4301879 - Hamluis.
I have a similar issue. And I am looking for the machine to give, at boot, the option to choose which disk to boot from.
Have you resolved your question or are you still looking?
Edited by hamluis, 06 August 2017 - 05:09 PM.