Thank you for contacting the Intel Communities.
I was able to find this workaround for this situation that may work for you.
Basically, it would be uninstall the driver for the RAID controller and then install them again.
I tried that procedure you directed me to on StackExchange. It didn't help. The spindle shows up in the device manager; but, the OS doesn't see it. I'm running Windows 10; the Microsoft update app "pestered" me no end. I let it download; and picked future date; and whatta ya know; the app upgraded while I was out of the house; so, my environment is a little different now.
The Intel Matrix Storage Console won't load; [I thought, I'd take a look at the volumes]. I get a message reporting that "a plug-in did not provide a page for the selected device." "A plug-in failed to load."
The spindle shows as un-allocated in the Disk Management app. Are there any Intel utilities you know of that will do a low level scan of the drive; and, help me identify files? At this point, I'd just be happy to have the space.
I'm really confused by this behavior; my boot drive is fine. It's just this second RAID pair that is acting up. Do you have any idea what that's all about?
Any suggestions or leads are appreciated.
I would like to get some information about your system to better assist you on this.
Please access the link below and provide me with the report you can save after scanning your system.
This will gather the necessary information for me to identify your system.
I look forward to your answer.