– I have confirmed this working on a Macbook Air 11″, 2010, 1.6Ghz version. – I would recommend creating a separate partition for your OS X Lion installation as well.Hold Option/Alt after your see the Apple logo appear and boot with the thumbdrive in your Mac.Ĭhoose the USB Drive to install OS X Lion from your USB Thumbdrive! Once its finished, you now have a bootable OS X Lion install thumbdrive (basically just like what the Macbook Air ships with).ĥ. I recommend erasing the destination, so be sure to backup any data on the thumbdrive prior to this step! This will take a few minutes to do. (ie THUMBDRIVE in the screenshot) and then click Restore Once you have it chosen, click and drag your USB Thumbdrive from the left pane to the Destination box. Click on the Browse button and locate the. On the right pane, go to the Restore tab.ģ. You'll be presented with the OS X Startup Manager, listing all bootable devices. When your Mac's screen turns off, hold down the Option key while your Mac reboots. This is very handy for us Macbook Air users that do not have an external optical drive.ġ. To use the bootable flash drive as an OS X Lion installer: Insert the USB flash drive into one of your Mac's USB ports. We can then boot the USB Drive on our Mac to install OS X Lion from it. As the bootable media is created, shift it across the crashed Mac. Click on Start to deal with the USB drive. Select the USB drive that is to be formatted and booted across the system. dmg installer file for OS X Lion onto a usb thumbdrive. Select Start to continue with the process. – USB Thumbdrive or Memorycard Reader w/memory card (4GB mininum, data will be destroyed).
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