I am having an issue with two of the four hard drives in my MSS. I've loaded Linux Mint. When getting into Disks, only two of them show. They are not visible when running the command lsblk.

When I boot the system, all four drives are recognized, two are labeled slave and two master. It seems that the two master drives are in the bottom slot and the third slot from the bottom. I've changed three of the drives around and bays 1 & 3 are always marked as slaves.

I there something in the bios that I should look for to try and rectify this? Thank you.

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