rmoriz

iMac 18,3 – macOS Tahoe 26.6.2 Wi-Fi + Audio Fix (English, CLI)

Status: September 26, 2026 – macOS Tahoe 26.6.2 (build 25G83), iMac 27" 2017 (iMac18,3), OCLP 2.5.1 Correct KDK: KDK_26.6.2_25G83.kdk (exact match, https://github.com/dortania/KdkSupportPkg/releases/tag/25G83)

All steps below are copy-paste for zsh. GUI is only needed once: MyKextInstaller → Install Kext → allow in System Settings.

0. Preflight – exact current state

A Short IPv6 Guide for Home IPv4 Admins

This guide is for homelab admins who understand IPv4s well but find setting up IPv6 hard or annoying because things work differently. In some ways, managing an IPv6 network can be simpler than IPv4, one just needs to learn some new concepts and discard some old ones.

Let’s begin.

First of all, there are some concepts that one must unlearn from ipv4:

Concept 1

Requirements

VirtualBox
Vagrant
Packer
a Mac with a lot of Memory/CPU/Disk
great Templates/Tools from https://github.com/timsutton/osx-vm-templates

Steps

CoreOS mdadm RAID1 for ROOT

Setup SoftwareRAID for the CoreOS root partition without data-loss.
Only for ext4!
The Trick is to use the right volume label and fs-types :)
We assume CoreOS is on /dev/sdaX and the second RAID Device is /dev/sdb
Drawback: only / gets mirrored, Node goes down when sda fails

Boot into any recovery system like Grml
If not already done: install CoreOS

	# Create a new worktree and branch from within current git directory.
	ga() {
	if [[ -z "$1" ]]; then
	echo "Usage: ga [branch name]"
	exit 1
	fi

	local branch="$1"
	local base="$(basename "$PWD")"
	local path="../${base}--${branch}"

	// 3D Dom viewer, copy-paste this into your console to visualise the DOM as a stack of solid blocks.
	// You can also minify and save it as a bookmarklet (https://www.freecodecamp.org/news/what-are-bookmarklets/)
	(() => {
	const SHOW_SIDES = false; // color sides of DOM nodes?
	const COLOR_SURFACE = true; // color tops of DOM nodes?
	const COLOR_RANDOM = false; // randomise color?
	const COLOR_HUE = 190; // hue in HSL (https://hslpicker.com)
	const MAX_ROTATION = 180; // set to 360 to rotate all the way round
	const THICKNESS = 20; // thickness of layers
	const DISTANCE = 10000; // ¯\\_(ツ)_/¯

	brew cask install xquartz
	brew install amiaopensource/amiaos/decklinksdk
	brew tap homebrew-ffmpeg/ffmpeg
	brew install homebrew-ffmpeg/ffmpeg/ffmpeg $(brew options homebrew-ffmpeg/ffmpeg/ffmpeg --compact)

	#!/usr/bin/swift

	// DISCLAIMER

	// This script modifies an unencrypted file associated with the trial version of Final Cut Pro.
	// Under the DMCA (17 U.S.C. § 1201), this modification does not qualify as circumvention of a technological
	// protection measure (TPM), as it does not involve bypassing encryption, authentication, or similar protections.
	// Distributing this code is therefore legal under the DMCA.

	// This script is intended for educational and research purposes, such as exploring trial-related file structures,

	#!/usr/bin/env ruby

	###################################################
	## Display screen dimensions in macOS using ruby ##
	##################################################
	# found https://developer.apple.com/reference/coregraphics/1456395-cgdisplaybounds?language=objc
	# --> use CoreGraphics framework
	# --> CGRect CGDisplayBounds(CGDirectDisplayID display);

	#############################################

	#!/usr/bin/env ruby

	require 'chef-api'
	require 'fauxhai'

	include ChefAPI::Resource

	ChefAPI.configure do \|config\|
	config.endpoint = 'http://HOSTNAME:4545'
	config.client = 'admin'