- #Create bootable usb os x lion how to#
- #Create bootable usb os x lion mac os x#
- #Create bootable usb os x lion install#
#Create bootable usb os x lion install#
When the restore is complete the OS X Mountain Lion USB Install Key will be mounted and it will be ready to use. Head to Contents > SharedSupport and look for the file called 'InstallESD.dmg'. Enter your administrative username and password then click OK. Download: OS X El Capitan This downloads as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. Plug the USB Flash drive into your Mac book Select the just-plugged-in USB from the Disk Utility and click on the Partition tab.
#Create bootable usb os x lion mac os x#
Make sure the Mac OS X Install ESD is set as the Source then drag the MOUNTAINLION partition from the list on the left into the Destination field.Ĭlick the Restore button then click the Erase button from the confirmation popup to begin building your install key.Īnother popup will appear asking you to log in. Make a bootable USB drive Install of Macbook Pro OS Mountain Lion.Buy and download Lion from the Mac App Store. Select the new Mac OS X Install ESD partition that appears then click the Restore tab.
Right click or control-click the InstallESD.dmg image from the left side of Disk Utility and choose Open Disk Image from the popup. Mountain Lion is the second release of OS X to be delivered via the Mac App Store. When asked to confirm click the Partition button. Next click the Apply button to save your changes. Set the Partition Layout to 1 Partition, set the Name to 'MOUNTAINLION', set the Format to Mac OS Extended (Journaled), and then click the Options button.Ĭhoose GUID Partition Table from the popup window then click the OK button. Select your USB thumb drive from the list on the left and click the Partition tab. Right click or 'Control' click InstallESD.dmg and select Disk Utility from the Open With menu. Insert a blank DVD, and click the Burn button. The USB flash disk must have more than 5 GB of free capacity. Mac OS X Lion USB flash disk installation must be created before you update your Mac, because after update process, the system will delete the installation application.
#Create bootable usb os x lion how to#
Then double click the SharedSupport folder Select InstallESD.dmg and then click on the Burn icon in Disk Utility. How to create bootable installation flash disk of Mac OS X Lion.
Navigate to the Applications folder and right click the new "Install OS X Mountain Lion" icon then select Show Package Contents from the contextual menu. In the Source pop-up menu (labeled Select. Select Quit from the Install Mac OS X Lion to exit the installer.Ĭlick to launch a new Finder window from your dock. Connect to your Mac the properly formatted hard drive or flash drive you want to use for your bootable Mountain Lion installer. Once the download has completed the Mac OS X Lion Installer will launch. If the LaunchPad appears press the Escape key. Press the Install button for OS X Mountain Lion and wait while the operating system downloads. **If you have not yet installed Mountain Lion then you can follow these instructions to buy it and begin downloading. These are instructions on how to create a bootable OS X Mountain Lion USB key.Ĭonnect a 8GB or larger USB key to your computer then launch the Mac App Store from your dock.Ĭlick the Purchased tab at top of the window then hold down the Option key and click the Purchased tab again.
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