MSI H81M E33 | Boot menu doesn’t boot second drive OS

I’ve bought new SSD and installed Windows 10 there.
So my plans were to switch between two different OS installed at old HDD and new SSD.

So I press F11 during PC loading, get boot menu suggests me two different disks to load but any disk I choose I’m loading to the first old HDD OS.

The only way to load new OS is to disconnect old HDD SATA cable.

What’ve I done wrong?