I have a Gigabyte Z170X-UD5 with two M.2 SSD's installed (Intel 600p, 256GB). I was able to set up a RAID 1 volume in BIOS following the instructions in the user manual in section C-1 UEFI RAID Configuration. I can see the newly created volume in the Peripherals\Intel Rapid Storage Technology section, but I don't see it under the BIOS Features\Boot Option Priorities. SATA is set to RAID. Installation is a 64-bit version of Windows 10 Pro from a USB drive created using Rufus. Problems start when the installation gets to the install location - none is seen. I tried loading both Intel's and Gigabyte's RST drivers, but no install location shows up after they load, prompting me to load another set of drivers. I'm stuck at this point. Thanks for any help.