# Create macOS Installer - TINU

## Create a bootable installer for macOS with TINU

TINU is a very useful opensource GUI for the `createinstallmedia` command, together with some useful tools such as an EFI mounter, the macOS Downloader and the OpenCore EFI-folder integration. It can currently download Mac *OS X Lion (10.7.5)* to *macOS Big Sur (11.6) using* App Store links and Apple CDN links. It can be launched from many versions of macOS, including Sequoia.

Another good alternative for downloading macOS is [Mist](https://github.com/ninxsoft/Mist) which can download Mac OS X Lion (10.7.5) to macOS Sequoia (15.1.1) and beyond.

* Download [TINU: The open tool to create bootable macOS installers.](https://github.com/ITzTravelInTime/TINU)
* Plug in a 16GB+ USB-stick
* Launch TINU and click *Create a bootable macOS installer*

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2Fgit-blob-890a481f64bcf2676e80bb0aeb40b07e44367eb0%2Ftinu_launched.png?alt=media)

* Click on *Proceed* and choose the target USB-stick. Then click *Next*

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2Fgit-blob-c70b0c4c23478aa655ac5183452612721bfd05e2%2Ftinu_choose_drive.png?alt=media)

* Click on *Get Installer*

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2Fgit-blob-664728124041294d554054101b55acb437cd347d%2Ftinu_get_installer.png?alt=media)

* Try to download *Big Sur* from the App Store by using the provided link within TINU.
* If you are unable to download from the App Store, follow [Making the installer in macOS](https://dortania.github.io/OpenCore-Install-Guide/installer-guide/mac-install.html#downloading-macos-modern-os), by using the following command in the Terminal (you will need at least 50GB of available disk space):

  ```
  mkdir -p ~/macOS-installer && cd ~/macOS-installer && curl https://raw.githubusercontent.com/munki/macadmin-scripts/main/installinstallmacos.py > installinstallmacos.py && sudo python installinstallmacos.py
  ```

  * Once finished, you’ll find a DMG in your `~/macOS-Installer/` folder containing the macOS Installer, called `Install_macOS_11.5.2-20G95.dmg` for example. Mount it and you’ll find the installer application.
* Open the installer application for macOS Big Sur inside TINU and click *Next*

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2Fgit-blob-4cfe771b9b42d0bc58d4f05ce39dec2b7a5c3afa%2Ftinu_choose_installer.png?alt=media)

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2Fgit-blob-62cc5f46da4a4020bc9f3dac45018a934e004313%2Ftinu_confirm_installer.png?alt=media)

* Click *Options* and add the EFI folder which you previously created in *OCAuxiliaryTools* from the Desktop

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2Fgit-blob-2b9e6745eb48d57c171769505270279b76e31aa9%2Ftinu_add_opencore.png?alt=media)

* Click *Done* and start creating the macOS installer by clicking on ***Yes, I understand***.
* This will take a number of minutes. You can check the log for details.

This step completes the creation of a hackintosh bootable USB drive with the macOS installer and the OpenCore EFI folder on it. - You may want to add some tools such as *OCAuxiliaryTools* and *EFI-Agent* to the USB drive, as these will be useful during post-install configuration.

**Next follow the steps on the** [**Install & Postinstall**](https://chriswayg.gitbook.io/opencore-visual-beginners-guide/step-by-step/install-postinstall) **page!**

![](https://3366797968-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LwXl0c-BaUDNDvUg8TP%2Fuploads%2FFgodoVfQ9J7nzfXa4rSu%2Fby-nc-license.svg?alt=media\&token=03a208c0-37c6-488e-b564-b57cd43c75c9) *Except where otherwise noted, content on this site is licensed under the* [*Creative Commons — Attribution-NonCommercial 4.0 International — CC BY-NC 4.0*](https://creativecommons.org/licenses/by-nc/4.0/) *license. Attribution by link to* [*chriswayg · GitHub*](https://github.com/chriswayg)*.*