

(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. This is very handy for us Macbook Air users that do not have an external optical drive.ġ. We can then boot the USB Drive on our Mac to install OS X Lion from it.

dmg installer file for OS X Lion onto a usb thumbdrive.

This recipe will explain how to make a USB Thumb Drive bootable with the OS X Lion Developer Preview installer on it and in turn allow you to install Lion on a Mac without an optical drive (ie Macbook Air line).
