After booting once into a Kali Live flash drive, I shut down and removed the flash drive. My Qubes install is not detected now. I changed absolutely nothing, BIOS or otherwise. My M.2 PCIe SSD is detected in BIOS, but the Qubes install on it is not. Any suggestions?
Apparently I just had to add the Qubes UEFI file manually. Not sure why it wasn’t auto detected anymore, but it’s all fine now.