LSI MEGARAID 9341-8I. How to activate Boot Device?

Question

Iron

There is a Supermicro X10DRi-T mother plugged into it LSI Megaraid 9341-8i
In BIOS legacy boot mode - control via internal software on the controller
In UEFI mode via the BIOS of the motherboard. (It turned out to activate the appearance of an additional menu in BIOS only by setting PCI Express, on which the controller is on, to UEFI mode)
There will be 6 SAS 900 Gb drives with 4k support. While in stock 2. Connected via the Supermicro backplane
Raid 1 and 2 are created on 2 disks with ease and ease. But when installing Windows, an error is generated that installation on the selected disk is not possible, perhaps it does not support booting. The tests were on Win Server 2016 and Win Seven
I started digging ... The Boot Device button is not active, but when working through the BIOS of the motherboard, when trying to select the boot device value, in the controller settings, it shows emptiness, like there is nothing to choose. Also, for all this time, no raid, no hard has surfaced in the device boot sequence settings. In general, the brain boils :) This is my first LSI. Tell me which way to dig.
ps connected the old sata hard directly to the mother. Everything is ok, everything is set.

Answer 1

The problem was solved
1. I reset the BIOS to default and updated the firmware again. Those. made a clean start environment by default
2. Made a UEFI bootloader using RUFUS (you can also use Diskpart, but longer and more cumbersome). It is also necessary to set the file system to NTFS
3. In the BIOS of the motherboard, I set the PCIe slot into which the controller is plugged into UEFI
4 mode. In the BIOS of the motherboard, I set it to boot UEFI or UEFI & Legacy
5. In the BIOS of the motherboard, I set the BIOS to boot first UEFI Shell
6. Save and Reboot
Then everything went like clockwork. The UEFI shell was loaded (something similar to powershell), the disk was captured by the handles, the folder with the boot file (bootx64.efi) was indicated, and the installation of Server 2016 flew
After the first reboot of the Windows installer, I went into BIOS and found UEFI Windows Boot in the list of available downloads.
Put it first in the download. Happy End
I found info here
https://technet.microsoft.com/en-us/library/cc7490...

Answer 2

this is antiquity
in uefi will not work, and in general does it make sense to use uefi?