Before this question is marked as a duplicate of 'Just installed LSI 9211; no drives showing up to Linux' or anything similar: No. My problem was with the UEFI firmware being unable to boot from the LSI card. Linux sees the drives completely fine, and I just mention it because my bootloader is GRUB2. Switching the PCI port to which the card was connected didn't help.
I recently acquired a LSI SAS PCIe card, specifically a 9211-8i, because I needed to connect several hard disks to my computer. I have a somewhat complicated storage layout, and ended up needing to install Linux on a disk connected to the LSI card. Well, my computer is configured to boot in UEFI mode, and while the operating system can see all the drives with no problem, the firmware can't. I'm able to install the GRUB2 bootloader into my primary M.2 SSD, and GRUB launches... but it is unable to see the disks connected to the LSI card.
Is there any module or way to allow GRUB2 to see those disks?