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TINU is the open tool to create bootable macOS installers.

[TINU Is Not Unibe**t]

This software is intended to be used to create a bootable macOS installer for computers capable of running Apple's macOS. This app, among other things, is also a GUI for the createinstallmedia executable that could be found in any macOS installer app from Mavericks up to the latest versions.

It allows you to easily create a macOS install media without messing around with command line stuff and without using Disk Utility, and also detects and prevents the most common errors with the creation of bootable vanilla macOS installers.

For the latest Source code check out the development branch!


  • No need for guides or instructions! Just follow the very simple on-screen indications to very easily start the bootable macOS installer creation process.
  • Fully open: You can see how this program works and you can freely contribute to it! (See the Repository rules and the Note that sections of this page)
  • Support for multiple languages (currently just Italian and English, but more will be added with future updates once the system which allows it gets improved)
  • Can work with every macOS installer app that has the createinstallmedia executable inside its internal resources folder (including also beta and newly released installers).
  • 100% clean using the official apple's method: The bootable macOS installers created with this tool are made using the official apple's createinstallmedia method, just as if you created them using the command line, this ensures the best and the cleanest results avoiding all the problems that modded installers have.
  • Does not require any special preparations. Just open the program, make sure you have a big enough USB drive plugged in (see the Requirements section) and have a macOS installer app on your disk.
  • No need to use Disk Utility first. TINU can format your drive or partition for you, if it's necessary.
  • Integrated downloads from Apple for lots of macOS/OS X installer apps (to access them open the app, go to the menu bar, and then Tools->Download a macOS installer).
  • Integrated EFI partition mounter tool.
  • Automatic Clover and OpenCore EFI folder installer.
  • Tested to work on all the latest macOS releases.
  • Makes use of the latest Swift 5 language and the latest Xcode release.

(To suggest a new feature please contact us.)


  • A computer that runs Mac OS X Yosemite or later.
  • A drive or a partition (to turn into a macOS installer) of least 8 GB (9+ GB for a Catalina installer or 12+ GB for installers of Big Sur and later macOS versions). NOTE: partitions are usable only if they belong to a drive which uses the GUID partition format.
  • A copy of a ".app" macOS/Mac OS X installer (Mavericks or newer versions are supported), it's recommended to have the app placed into the /Applications folder or in the root of a volume connected to your computer (excepted the drive/volume you want to turn into your macOS install media).


Building/Compiling requirements:

  • Xcode 12.0 or newer.
  • An internet connection.

Frequently asked questions (FAQs):

Useful links and contacts:

Thread (English) on

Thread (Italian) on

Thread (English-German) on

Contact the project creator (ITzTravelInTime aka Pietro):

Swift packages used:

Repository rules:

  • Respect the GNU GPL license please!
  • If you want to create your own modified fork of TINU please let the project maintainers know! In this way your changes/fixes can be integrated into the main repo of the app.
  • If you believe that your changes may help with the project, create your own fork, apply your changes to it and then create a pull/merge request to the default branch here to let the changes be applyed more easily by the repository maintainers, and also have you credited by github for your work.
  • Create an issue here on GitHub for any problems, bugs, bug fixes, spelling or grammar errors, mis-placements or just for suggestions (ones from designers and developers are always especially welcome).

Note that:

  • We (the project creator and other people involved with the project) assume no responsibility for any use of this app or source code; use them at your own risk!
  • We (the project creator and other people involved with the project) do not guarantee support to you; this is only an open source project done in our free time, not a product released by a company!
  • This project is born only for educational and demonstrative purposes, it's not intended to be used for commercial purposes. It's released in the hope that it could be useful to you.
  • Changes to the provided source code are documented using the git commit history, so for any detailed info about any changes made please use that.


  • Apple for macOS, system icons and macOS installer apps (and their createinstallmedia executable).
  • Special thanks (for their help/feedback) to: Francesco Perchiazzi, Nicola Tomarelli, Roberto Sciortino, Raffaele Sonnessa, Ermanno Nicoletti, Tommaso Dimatore, Michele Vitiello Bonaventura, Massimiliano Faralli, Davide Dessì, Giorgio Dall'Aglio, Peter Paul Chato, Antonio De Masi, the Facebook group "Italian Hackintosh group!!", the Telegram group "Hackintosh Italia" and the community from .
  • Matthew Elvey for README copyediting.
  • Gianmarco Gargiulo for the current app icon and usb drive image.
  • Thomas Tempelmann for help with some UI/code bugs and some grammar/spelling mistakes.
  • Pietro Caruso (ITzTravelInTime) project creator, maintainer and main developer.

Legal info:

TINU is the open tool to create bootable macOS installers. Copyright (C) 2017-2022 Pietro Caruso (ITzTravelInTime)

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.