How to Dual Boot between Windows / Linux when Headless

[adaseb]

I few of my rigs are using Ubuntu however lately I am losing profits due to Nicehash's optimized X11 miner and Claymore's ETH+DCR miner.

Wondering if its possible to dual boot a rig when you are headless.

So far the easiest way is to just use another physical hard drive and connect and disconnect the SATA power between them.

However wondering if I can make a new partition and switch in Windows/Linux which partition is active?