Hardware:
Motherboard: ASRock z590 extreme
CPU: Intel i7-11700K
Old windows storage: WD Blue 500 GB
New/Desired Storage: Samsung 980 Pro 1TB
BIOS Mode: UEFI
I have installed the m.2 drive in the "Hyper" m.2 slot which has gen 4 enabled. When in a windows in the old SSD, I can see everything...