CaseySJ
Moderator
- Joined
- Nov 11, 2018
- Messages
- 22,224
- Motherboard
- Asus ProArt Z690-Creator
- CPU
- i7-12700K
- Graphics
- RX 6800 XT
- Mac
- Classic Mac
- Mobile Phone
The OWC NVMe enclosure should work reliably with F9. Please download and run IORegistryExplorer and post the IOReg file (File -> Save As...). Also make this change to BIOS:Hi @CaseySJ , I've been reading your guide for some time, just yesterday I got my hands on a Z390 Designare with Big Sur and Opencore 0.9.7
They have installed the latest F9 BIOS and Thunderbolt seems to have some problems. What I ask you is:
1. The Thunderbolt OWC Enclosure NVMe is detected for 3 minutes and then disconnects...advice? I think it's a bios problem
BIOS -> Thunderbolt -> Thunderbolt Boot Support -> Boot Once
2. Do you think I can downgrade the BIOS even if the official website says it's not possible, after installing version 9?
3. To downgrade do I have to flash via EFIFLASH?
This is why I don't recommend BIOS F9 (because it's a "capsule" BIOS that cannot be downgraded). However, let's put this on hold for now. There are other troubleshooting steps we should take first.
The link is in the spoiler at the top of Post 1 called Quick Reference to Mini-Guides and Micro-Guides:4. Can you link me to the latest modded and working bios for this card? If I understand correctly this also enabled something on the Thunderbolt port, right?
Are you referring to BIOS or Thunderbolt firmware? For NVMe SSDs we typically do not need to modify Thunderbolt firmware.5. Will using the modified firmware maintain compatibility and functionality under Windows? So will Thunderbolt continue to work under Windows?