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https://elitemacx86.com/threads/how-to-update-opencore-efi-for-macos-tahoe.2378/

A few issues here: The BOOTX64.efi must be in the BOOT directory. You must have SSDT-EC in the patched directory. The drivers64UEFI directory contains bogus drivers. The config.plist is not up to the mark and no quirks are configured. Assuming your Laptop supports UEFI Boot Mode, follow the...

Have a same setup due to your case and no such issue. The drives are also SN850X.

Provide the System Report, attach a copy of IOReg and EFI along with the BIOS Settings.

Provide the System Report, attach a copy of IOReg and EFI along with the BIOS Settings. To confirm again, does the freezing and random reboot stops when you remove either of these two boot drives or is it specific to Tahoe only? Also, provide the info where these two drives are installed on...

Are both the boot drives (Tahoe and Sonoma) SN850X? If not, then please mention the particular model in question. Also, does it matter which specific drive you disconnect or is it any of the drive (either Tahoe or Sonoma)?

How about you disconnect one of these drive and then check? Can you mention the drive models in the question?

RELEASE.

Framebuffer patching is required. Attach PR Files.

This was the ig-platform-id you were being told to inject. igfxagdc=0+EDID and the SMBIOS was the key. Glad its solved.

Still not as per the guide. Here are a few problems: - Remove ResetLogoStatus. - Delete all the device properties except for IGPU (PciRoot(0x0)/Pci(0x2,0x0). - Why are you using all the I2C satellite kexts? Just I2C+HID should be enough. You can remove the PS2 kexts as well (except for the...

So, only VLC causes the issue?

In BIOS, look for Device or Graphics settings and there should be an option.

Having Dual Drives where macOS is installed, shouldn't create any problems as long as the EFI is up to the mark and hardware has no potential problems.

You're welcome!

Provide the EFI you're using!

Yes

No display detected. Inject EDID on each con and set them as HDMI. Remove stolenmem and ensure that the DVMT is set to 64MB. What macOS version are you runnin?

WEG is WhateverGreen. Use v1.6.5 and then check

Okay. Just updated the message. Kindly review it.