There is no clear documentation available online, so here goes: - the cryptic device configuration option in the boot options is where you configure RAID. - the morons who developed UEFI screwed all of us. If you have a full system image backup of lousy windows 10 - to restore that piece of steaming bullshit, your USB drive should be formatted for UEFI. Otherwise windows booted from a regular USB drive will whine that UEFI is not available. - trying to add a option via the bios does not work Lastly, to get the lousy RAID drivers to be able to install windows 10 on fresh drives, download the intel storage drivers from the Dell support website for the 7710. It will not say RAID anywhere, but if you download it and extract the contents to a USB drive, on recovery, when it asks for the driver, select one of the system information files and your raid drive will be visible now. Thank you Dell support for not doing your job and not mentioning this information anywhere in a way humans