S_D_B Solution:
Disconnect ALL drives except the target 4TB SSD where you want Windows installed.
Boot from your Windows 11 USB installer.
At the installer screen, press Shift + F10 to open Command Prompt.
Run these commands:
bash
diskpart
list disk
select disk X (X = number of your 4TB SSD)
clean (WARNING: deletes all data!)
convert gpt
exit
exit
Proceed with a custom install, deleting all existing partitions on the 4TB drive during setup. This forces Windows to create a new EFI partition on the 4TB SSD.