I got Catalina 10.15.4 (19E266) up and running with OC 0.5.6. Everything is working except my LG WH16NS40, flashed as a WH16NS60, does not show up under macOS. It shows up in the BIOS and works under Windows but nothing in macOS. Am I missing a kext or something? I've tried different physical SATA ports and nothing. Maybe trying MacPro7,1 SMBIOS? Here's a link with System Information and other info if needed and lastly here is my EFI . Specs SMBIOS : iMacPro1,1 Bootloader : OC 0.5.6 Mobo : ASRock B450 Pro4 CPU : AMD Ryzen 5 2600 RAM : 16GB 2x8 3200 G.Skill Ripjaws CL16 3600 (running at 3200) GPU : Sapphire RX 570 Nitro+ 8GB submitted by /u/GhostBoy805 [link] [comments] [► Source]