How to Fix X64 Exception when booting USB
Graphics issues usually stem from an unsupported GPU, missing acceleration patches, or incorrect boot arguments.
Quick Fix Steps
- Verify GPU support: Check if your GPU model is natively supported in your target macOS version via WhateverGreen documentation.
- Update kexts: Ensure Lilu and WhateverGreen are current and loaded before other GPU-related kexts.
- Check boot arguments: Add
-v keepsyms=1 debug=0x100for debugging, oragdpmod=pikerafor modern AMD cards. - Test Metal support: Open About This Mac > System Report > Graphics and confirm Metal is listed.
Verification
- Graphics acceleration is smooth (not CPU-bound).
- Metal is reported in System Information.
- No GPU-related kernel panics on boot.
Related Searches
Original Question: "X64 Exception when booting USB."
Specs:
CPU: Intel Core i7 740QM
GPU: NVIDIA GeForce GTS 360M
Motherboard: Intel
Laptop model: Toshiba Qosmio X505-Q888
Hi, so I am trying to install Catalina to my laptop following the OpenCore guide and going the legacy route since my laptop is not UEFI. I followed all the instructions carefully and I would say has been kinda easy kinda hard up until the point where I boot the macOS installer. Whenever I try to boot it, like after I choose to boot from the USB from the bios, it goes to a black screen for a few seconds with a blinking cursor, then there is a error that is in red that says: x64 exception type - 00000000000000006 and then all the values of my cpu registers. What does this mean? Am I doing this wrong?
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