Are you sure it is not grub, but a video issue?
I do not know RAID and how that might cause issues but you seem to be just booting from sdd in UEFI mode.
Because you only have one install grub will not normally show a menu. And with UEFI shift key does not always work. Some use Esp key and that may work to get grub menu.
What video card. You may need nomodeset.
How to set NOMODESET and other kernel boot options in grub2 - both liveCD & first boot, but different
Graphics Resolution- Upgrade /Blank Screen after reboot mega thread - MAFoElffen