I have windows 10 installed in my HP envy 15-100j. I have 1 tb harddisk with msata slot empty at the time I bought the laptop. Now I bought a new Samsung 850 evo msata ssd (250gb) and when I install the hardware and press the power button, I get windows 10 cannot boot with boot failure error message. But when I remove ssd windows 10 properly loads up. I am trying to follow this tutorial at how to install on msata ssd boot drive in your laptop
On the hp envy specs, I find that my laptop can have msata 32gb for cache purposes. On the tutorial, it says I can boot from msata ssd even though the main purpose of that slot is for cache in my laptop.