Go to terminal and insert the following commands:

Load up Linux and insert your USB drive.

Load up all the desired ISOs for the Windows/Linux onto the second parititon (Multiboot)

Use your desired method to create a OSX installer, but make sure to set the destination to InstallOSX partition (first partition) to create the OSX USB installer.Format the partitions above, and make sure to choose GUID Partition Table scheme!.Storage (Format: MS-DOS FAT) Size: Whatever you desire to have as separate storage Multiboot (Format: MS-DOS FAT) Size: Recommend minimum 8GB or desired amount to fit all OSs (Ubuntu, Windows, Mint, etc) InstallOSX (Format: Mac OS Extended Journaled) Size: minimum 8GB From an existing running OS X, start Disk Utility and create 3 partitions are below:.We will fix the partitions tables and set the OSX install partition to active, so that the USB boots to Chimera/Chameleon.We will use YUMI to load up multiple OSes onto the second partition.We will use traditional methods to create OSX installer USB but targeted to the first partition.The thrid partition is not required but recommend. We will create three partitions on the USB: 1) for OSX installer 2) for Linux and Windows installers 3) for storage.YUMI – Multiboot USB Creator ( Download).An existing working install or live version of Linux.USB drive of 16GB or greater is recommended.This entire guide, including creating OSX installer USB is solely for experimental reasons.

This guide is just my experience and am sharing it with you guys for educational purposes. If you do follow this guide, please make sure to attain a valid purchased copy of the OSes you plan on installing. I am not responsible for any consequences to your system by following the guide below. This USB drive can be very helpful in urgent situations such as: fixing broken OSX install (chameleon, kext, etc), installing/repairing Windows, or running Live CD of any Linux OS. This guide will explain how to create a USB drive that can be used to install OSX, Windows, and Linux from a single USB drive.

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