The Lion installer you just downloaded can then be found by navigating to the external drive's Applications folder. If you wish to boot back into Lion before finishing the tutorial, you can simply restart your Mac holding Option, and this time choose your main hard drive. A broken Mac computer with Mac OS X or macOS.
This guide will teach you how to create a bootable USB Flash drive of Mac OS X Lion 10.7 and install Lion from USB, rather than downloading it from Mac App Store on each and every Mac computer you own. If you bought a new machine from Apple you have OS X 10. The Mac OS X 10.7 Lion is available for installation only from the Mac App Store. Quit it and extract InstallESD.dmg from the Install Mac OS X Lion file found in Applications, as described above. Make a Bootable USB Drive of OS X 10.8 Mountain Lion from the Recovery Hard Drive On every OS X 10.8 Mountain Lion there is a hidden partition to enable a method for Mountain Lion OS to be reinstalled on the machine, it is known as the Recovery Partition or drive and is 650mb in size. Find and double-click on the Shared Support. When it's finished downloading, the installer starts automatically. Now hold down the control key while clicking on the Install Mac OS X Lion icon, and choose Show Package Contents. Lion is available to download you won't have to pay for it again. Update to 10.6.8 using Software Update, and open the Mac App Store. Choose to boot from Mac OS X Install DVD, and when instructed, install Snow Leopard on the external drive.Īfter your Mac reboots from the newly installed version of Snow Leopard, follow the on-screen prompts to set it up, as you would a new Mac. With your Snow Leopard install disc in the optical drive, restart your Mac with the Option key held down.
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