The interesting thing about the 3.76 GB installer that is downloaded from the App Store is that after you install it, it magically deletes itself after the install is complete. (See the Apple Resource link below for details.) For all Macs produced AFTER the launch of Lion, you can re-install Lion via the Internet.
BOOTABLE USB OS X LION FOR MAC OS X
Note: if you are looking for instructions for Mac OS X 10.8 – Mountain Lion – please see this post. You will also be able to order a USB stick from Apple but that will be a bit of costly option, especially when you can do it yourself.
![bootable usb os x lion bootable usb os x lion](http://2.bp.blogspot.com/-QN8lDMQZxzE/TzdXVmbkDHI/AAAAAAAAAvY/uyJamg_OsYU/s1600/Lion+desktop.jpg)
In my excitement yesterday about the release of the new Macintosh operating system called “ Lion“, I downloaded and installed the new OS without thinking about creating a bootable DVD since Lion is the first Apple OS to NOT come on DVD but rather be distributed via the App Store.