How to Fix Firewire / PCI-E Problems / Big Sur / Open Core 0.6.3

By Big Sur
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How to Fix Firewire / PCI-E Problems / Big Sur / Open Core 0.6.3

This mini-guide provides a structural approach to troubleshoot and fix the issue.

Prerequisites

  • Confirm your hardware specifications (CPU, GPU, Motherboard).
  • Ensure you have a bootable recovery USB and backup your EFI.

Fix Steps

  1. Review your system logs and verbose boot output for specific error codes.
  2. Ensure your OpenCore and kexts are up to date.
  3. Compare your configuration with the official Dortania guidelines.

Verification

  • Reboot and verify if the functionality is restored and stable under typical usage.

Original Question:

Firewire / PCI-E Problems / Big Sur

Successful BIG SUR - New Installation Open Core 0.6.3

Only two things do not work: Thunderbolt and Firewire PCI-E Cart.

Copy of config.plist Attached and 2 Images.

I will be very grateful for help / Info / opportunities.

Firewire PCI-E Cart - Startech PEX1394B3 (Despite System-Info - See attached images)

Maybe due to lack (ACPI / SSDT?). NB: Worked in CATALINA.

Hardware Info:

New Install: iMac 19.1 - (Open Core 0.6.3)

6-Core Intel i5 - 3.7 GHz...

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Author: MacJust4me

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