I think there are too many bootable drives in the front bays. You can try the following procedures if you do not need to boot from the drives at front.
1. During post, ctrl+c to enter LSI Corp Config Utility
2. Choose HBA (or chipset) from the list if multiple LSI devices are on the PCIe bus
3. Enter “Advanced Adapter Properties” menu
4. Enter “Advanced Device Properties” menu
5. On top of the page, the “Maximum INT 13 Devices for this Adapter” is default to 24, you can set this to smaller value, such as 1 or 2 to free up more space.