I have a strange thing. I have two macOS systems: one is Mojave 10.14.6 and the other is High Sierra 10.13. High Sierra installed on the mechanical hard drive is my backup system, Mojave is installed on the solid state M.2 NVMe protocol. I first upgraded High Sierra to macOS 10.15 Catalina. After the upgrade, there is no onboard NIC driver. I updated the onboard NIC. It is normal, including audio is also normal. I updated my main system, Mojave, to macOS 10.15 Catalina. The update time is quite long, but when I update it, my audio can't be driven. When I boot, the screen flashes and the screen appears, and then I can enter the system. But there is no audio driver, I can't connect with my Bluetooth speaker connected with Bluetooth. The same EFI file boots into the mechanical hard drive macOS 10.15 Catalina everything is normal, but the macOS 10.15 Catalina into the solid state drive can not drive the audio. Who can help me.