How To Make USB Bootable OS X Lion 10.8 (with Video)

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How To Make USB Bootable OS X Lion 10.8 (with Video on the bottom)

To move Mac OS X Mountain Lion to a bootable USB stick, you first need a a large enough USB Flash Drive with capacity. Although the installer of Mac OS X 10.8 is about 4.3 GB in size, but we recommend a USB flash drive with at least 8 GB capacity.

Mac OS X Bootable USB

Mac OS X Bootable USB

Tutorial How-To Create Bootable USB for OS X Lion 10.8

  • Purchase or Re-Download Mac OS X Mountain Lion 10.8 from the Mac App Store http://itunes.apple.com/us/app/os-x-mountain-lion/id537386512?mt=12
  • Find “Install OS X Mountain Lion” application. Right-clicking the file opens an additional menu, where you can select please select “Show Package Contents” and confirm.
  • Click on “Contents
  • Click on “Shared Support

    Create Bootable USB OS X Lion

    Click on Shared Support

  • Double-click to open & mount the “InstallESD.dmg” file.
  • Open “Disk Utility” located in the Utilities folder in your Applications (Or, you can holding down the Command key on keyboard, then press the Space Bar and into the spotlight search field, please type disk utility.
  • Click on your USB Thumb Drive or External Hard Drive
  • Click on the tap Restore
  • Drag the USB Flash Drive or External Hard Drive to the “Destination” location
  • Drag the Mac OS X Install ESD to the “Source” location.

    Install ESD as source

    Drag the Mac OS X Install ESD to the Source location.

  • Hit “Restore
  • You are DONE!

  • Watch the Video Tutorial How-To Create Bootable USB for OS X Lion

     

     

    A Clean Install
    Now that you have a bootable copy of Mountain Lion, this drive/disk acts as a full-fledged setup tool for upgrading other Macs to the new OS. For a clean install of Mountain Lion on any compatible Mac, follow these steps:
    Insert your bootable disk or drive.
    Restart your Mac while holding down the option key. This will bring up the installer.
    Inside the Mountain Lion installation tool, you can open Disk Utility and erase your Mac’s hard drive. From the erase tab, choose “Mac OS Extended (Journaled)” and wipe your drive. (Make sure you have a backup first, just in case.)
    Once your Mac’s hard drive is erased, quit Disk Utility and go back into the Mountain Lion installer. Choose your Mac’s hard drive and begin installing Mountain Lion.
    By following those steps, your Mac will be restored to Apple’s stock setup and all of your personal files will be gone.

    Febryan Paudi (872 Posts)

    Febryan Paudi is Apple enthusiast. Falling in love with Apple-tech since 2007 when the first iPhone-generation released, loves Blogging since high-school.
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