I have a Dell M6400 that comes with 2 hard drive slots, one of which is an SSD. I bought another HHD for storage purposes a while ago. I installed it just by opening the bottom cover and attaching it as per service manual instructions, after which I formatted the drive.  It's been working perfectly fine, it shows up in My Computer and I can use it just like a USB drive. However during every bootup it prompts me with something that says "Press ctrl I to enter configuration utility" and I have to wait about 2 seconds before it goes on to boot normally. I went to "configure" it once and ended up having to reformat both drives because it did something really weird partitioning both drives. I think this is the Raid configuration utility? It's more of a nuisance right now but I'd like to get rid of it in case I let someone else on my computer and they enter the utility thinking that's what they're supposed to do.

My primary SSD that has my operating system is the Samsung SSD RBX series 6, and my secondary hard drive is listed as WDC WD6400BEVT-00A0RT0.