motherbds bios wont see the drives if you already have the sata ports in raid mode. You need to enter the raid bios to see the drive, create the raid array, & format it. depending on which version of windows you are installing, you may need to load drivers for the raid controller.
Thanks for the response.
These drives are not part of a RAID array yet -- I need the mobo to see them, so I can use it to *create* the array. I've unplugged all other SATA devices (except the DVD). Yet the "ez tuning wizard" function of the Maximus VII Hero mobo, which has the tool for creating RAID arrays, says there are no applicable disks.
When I boot off the Fedora disk, it sees both SSDs and treats them as separate independent drives and offers to install to one or the other of them. Of course that's not what I want; I want the mobo to see them so I can RAID1 them and *then* install Linux.
I just cannot understand how an OS sees the drives and the mobo does not. I'm assuming it's something too clever by half in this high-feature-set motherboard