ThinkPad X1C4 Catalina EFI Guide
A structured, Dortania‑style documentation site for running macOS Catalina on the ThinkPad X1 Carbon 4th Gen using OpenCore. This guide walks you from BIOS setup to post‑install tuning.
BIOS Setup
Configure firmware settings for UEFI, SATA, Secure Boot, and more.
Create Catalina Installer
Build a USB installer using the official Catalina app and proper command‑line tools.
Kext Downloads
Direct links and explanations for Lilu, WhateverGreen, VirtualSMC, itlwm, IntelBluetooth, and more.
ProperTree Guide
Learn how to open config.plist, run OC Snapshot, enable kexts, and manage ACPI entries.
SMBIOS / GenSMBIOS
Generate a proper MacBookPro13,1 SMBIOS and correctly populate PlatformInfo → Generic.
ACPI
Understand SSDTs, EC fixes, USB mapping basics, and how to wire them into OpenCore.
Config.plist Editing
Walkthrough of key OpenCore sections tailored for the X1C4 on Catalina.
Post‑Install
Finishing touches: power management, audio tweaks, Bluetooth, and Apple services.
Target Hardware
- ThinkPad X1 Carbon 4th Gen (X1C4)
- Intel Skylake CPU
- Intel HD Graphics
- Intel Dual Band Wireless‑AC 8260 (with itlwm)
- Intel Bluetooth (IntelBluetoothFirmware + Injector)
- Conexant CX11852 audio (AppleALC)
Why Catalina?
Catalina (10.15) is a sweet spot for Skylake ThinkPads: stable GPU acceleration, working Intel Wi‑Fi via itlwm, Intel Bluetooth support, and functional DRM in Safari (Netflix, Apple TV+, Prime Video).