Opencore Offline Installer Windows !new! Jun 2026

From the extracted OpenCorePkg folder, navigate to the X64/EFI directory. Copy the entire EFI folder from OpenCorePkg to the .

: Installed on Windows with the "Add Python to PATH" option checked.

: IntelMausi.kext (for Intel) or RealtekRTL8111.kext (for Realtek). Adding ACPI Files (.aml)

Contains the entire macOS installer. No internet is required during installation, making it ideal for systems with unsupported Wi-Fi or Ethernet cards. Step-by-Step Offline Method on Windows 1. Download the Full macOS Installer You cannot use the standard macrecovery.py for this, as it only pulls recovery files. Instead, use from GitHub. gibMacOS.bat Selection: select "Recovery Only".

Downloads only the macOS Recovery environment (~600MB). It requires a macOS-compatible Ethernet or Wi-Fi card to download the full 12GB+ OS during the actual installation. opencore offline installer windows

to download the "Full Install" files rather than "Recovery Only".

Since Windows cannot natively run Apple's createinstallmedia command, you must use community scripts to fetch the necessary files:

echo Building offline installer... wimlib-imagex capture C:\OpenCore\OfflineInstaller C:\OpenCore\OfflineInstaller\install.wim

This tool downloads the full installer directly from Apple. From the extracted OpenCorePkg folder, navigate to the

If you only have one drive, you can partition it as follows:

Creating an OpenCore Offline Installer on Windows: A Comprehensive Guide

Open the BuildmacOSInstallApp.bat script found in the gibMacOS folder.

Your final USB structure should look like this: : IntelMausi

Save and reboot, pressing your motherboard's boot menu key (e.g., F12, F11, F8). Select your USB drive (the UEFI option). The OpenCore picker will appear. Choose .

: As its name implies, an offline installer contains a full, complete copy of the macOS installer on the USB drive. Your computer can install macOS from this USB without needing to download anything extra from the internet during the installation process.

Create a folder named com.apple.recovery.boot at the root of the USB.

on the same drive and place your configured OpenCore EFI folder there. Core Requirements for the Offline USB