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First, make sure you have UEFI and RAID enabled in the BIOS.
If you use the CTRL-I to create a RAID you will need to reinstall the operating system and your data will be destroy on both drives.
You can install the Intel® Rapid Storage Technology, once you have Windows installed, that way you can check your RAID status. The IRST will maximize your PC performance; you can see more information here:
Intel® Rapid Storage Technology
If you create the RAID and enable secure boot the RAID still persist.
I hope this can help you.