Download and create USB installer for Mac OS X (Yosemite, Mavericks, Mountain Lion, or Lion)

Download and create Mac OS X USB installerAs you know, Apple releases a new OS X operating system every year, and the new OS X can only be downloaded via the Mac App Store (currently OS X Yosemite). The older versions of OS X are still supported by Apple, but it should be more difficult to download. My following tip can help you easily download and create USB installer for OS X – Yosemite, Mavericks, Mountain Lion, and Lion.

Before doing, you need to prepare 2 things:

  • An USB – at least 8Gb or higher.
  • A MacBook to run Disk Utility in OS X.

How to create USB installer for Mac OS X

Step 1: Download installer of OS X Yosemite, Mavericks, Mountain Lion, and Lion

We are still able to download Yosemite from Apple store:

Go to Mac Apple Store > use your Apple ID and login > Find and download OS X Yosemite. After downloading, OS X Yosemite Installer will appear in /Applications. To get the InstallESD.DMG, go to Application > right mouse on OS X Yosemite > select “Show Package Contents.

OS X – Mavericks, Mountain Lion, and Lion can be downloaded through Torrent method:

Firstly, Get μTorrent or Folx Pro (Folx Pro 3 full version download), then use following torrent file to download the OS X version you desire.

Step 2: Format and make USB bootable

1. Plug USB into Macbook and run Disk Utility > Select the USB drive in the left side > Click on Erase > Choose Mac OS Extended (Journaled) format > Apply.
2. Go to Partition tab > Select 1 Partition at Partition Layout.
3. Change the name to Untitled 1 from Untitled > Click on Option.
Make USB bootable in OS X with Disk Utility

5. Choose GUID Partition Table and click OK.

How to make OS X Yosemite installer USB 6. Click on Apply to format USB > End the Disk Utility when the process is completed.

Step 3: Make USB OS X installer

Run OS X installer.DMG download in step 1 to mount it’s virtual hard drive into system > Launch Disk Utility, select the right USB in the left side > Click pn Restore > Drag and drop OS X installer.DMG into Source > Drag and drop USB into Destination > Click on Restore button.

Make USB OS X installer

After the restore process is completed, we have obtained the USB stick containing the installer of OS X Lion, Mountain Lion, Mavericks, or Yosemite at your choice.

Notice: Once the USB stick should only contain one OS X installer version. You should have several USB stick if you want to create many installers.