Create a Bootable Flash Drive With OS X Lion Installer. VisageStockbyteGetty Images. Creating a bootable flash drive using the OS X Lion installer may seem like a difficult process, but its a DIY task any Mac user can perform provided you have a little bit of time, and this handy guide to take you through the process. OS X Lion and its downloadable installer create a conundrum for Mac users who would like to have bootable media from which to install Lion. The reason many people want to have a bootable Lion installer is to create clean installs, that is, install Lion on a freshly formatted hard drive that doesnt contain any previous OS. The other major reason to want a bootable Lion installer is for emergency booting and repair of your Macs hard drive. Its true that Lion creates a bootable Recovery partition that you can use for troubleshooting. But the Recovery partition is only usable if your drive is in basic working order. If your drive has a corrupt partition table, or youve replaced the hard drive, then the Recovery partition is downright useless. Since we have valid reasons for wanting a bootable copy of the Lion installer, were going to show you how to create one using a USB flash drive. If you would rather create a bootable DVD of the Lion installer, weve got you covered there, too. Take a look at Create a Bootable DVD Copy of OS X Lion Installer. If you are wanting to create a bootable USB flash drive for a diffeent version of the Mac OS, check out these guides Create Bootable Copies of the OS X Mountain Lion InstallerCreate a Bootable USB Flash Drive of the OS X Mavericks InstallerHow to Make a Bootable Flash Installer of OS X or mac. OSThat last link covers all versions of the Mac OS since OS X Yosemite. If youre ready to create a bootable USB flash version of Lion, then lets continue. What you Need For a Bootable OS X Lion Falsh Drive. OS X Lion installer. This is available from the Mac App Store. GB USB flash drive. You can use a larger drive if you wish, but more important than the size of the flash drive is its speed. If youre buying a new flash drive just for Lion, I recommend buying one of the fastest available. While slow read inexpensive flash drives will work fine, youll find that both the time it takes to create the bootable flash copy of the OS X Lion installer, and the time it takes to install Lion on a target drive, will be somewhat long. Some free time. The creation time varies by the speed of the USB flash drive, but plan on 3. Lets get started. OS X Mountain Lion version 10. OS X now named macOS, Apple Inc. Macintosh computers. Os X Mountain Lion Installer App' title='Os X Mountain Lion Installer App' />Access to a Mac to download OS X Mountain Lion from App Store and prepare UniBeast USB Drive. Ez Gig Iv Mac. A minimum of 8GB or larger USB flash drive. A PC capable of running OS X. Mac OS X Lion version 10. Mac OS X 10. 7 Lion is the eighth major release of Mac OS X now named macOS, Apples desktop and server operating system. Os X Mountain Lion Installer App' title='Os X Mountain Lion Installer App' />Continuing our Hackintosh guides journey, here we present the Easiest way to create Hackintosh for the Latest OS X iteration Mountain Lion. We had been working. Create a bootable DVD version of the OS X Lion installer. This allows a clean install of Lion, as well as having an emergency bootable DVD. OS X 10. 8 Mountain Lion will be offered exclusively through the App Store, familiar territory for Apple since OS X Lion was provided the same way. If youre interested in running Mac OS X, but you dont want to pay ridiculous prices for a normal Mac, then a Hackintosh just might be for you. In this guide, I. Screen-Shot-2012-07-25-at-8.36.43-AM.png' alt='Os X Mountain Lion Installer App' title='Os X Mountain Lion Installer App' />This article will help you easily download and create USB installer for OS X Yosemite, Mavericks, Mountain Lion, and Lion.