
If you want to burn Lion to a USB flash drive, plug it in and click on it in the left-hand sidebar in Disk Utility.If you’re burning it to a DVD, insert your DVD, select the disk image in the sidebar, and hit the “Burn” button. Open up Disk Utility and drag the DMG file into the left-hand sidebar.Navigate to Contents/SharedSupport and look for a file called InstallESD.dmg. Right-click on the installer and hit “Show Package Contents”.The installer should show up in your Applications folder. Buy and download Lion from the Mac App Store.Now follow the on screen instructions to install OS X Lion.Create a bootable OS X Lion USB stick or DVD based on the Mac App Store download.Choose the USB Flash Drive from there to boot.Hold down the alt/Option key on your keyboard when you hear the OS X start-up sound.Reboot your Mac with the USB drive plugged in.This will restore the Lion 10.7 image to the USB Flash drive.Make sure you have chosen the right USB drive, you don’t want to format the wrong drive and then click on Restore button.Then Click and Drag the USB drive from the left pane and drop it in the Destination field.Click and drag the IMac OS X Install ESD from the left pane and drop it in the Source field.Select the plugged USB from the Left pane on the Disk Utility and then go to Restore tab.



The guide is called UniBeast.Follow this guide, and you’ll be able to do a clean-install of Mac OS X Lion on your hackintosh, or upgrade your existing Snow Leopard installation (that’s your personal preference). So by following this guide, you can install Mac OS X Lion on your hackintosh using only a USB thumb drive. Download the Lion installer from Apple App Store.

What you get: A USB stick you can boot off and repair your Lion installation from. What you need: an 8G thumb drive and OS X Lion from the App Store. Option 1: Put a full bootable Lion installation on the USB Drive with a recovery partition.
