

While holding down the OPTION key, click on the “Purchases” section.So, assuming that you already downloaded and installed Lion, when you go to the App Store, and look at your Purchases section, Lion will show as “Installed” (see the picture above).

Also, I used the DVD I created below to install on another Mac and it worked fine. UPDATED 7/22/11 – There is now a VIDEO that explains all of the items below as well as steps on how to create a bootable USB Thumb Drive on THIS POST. So, how the heck do you download it again since in the App Store, it shows as “Installed” and there is no way to re-download it? That is the issue that I ran into and I had to re-download the Lion installer to create the bootable DVD. 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. You can re-install Lion via an Internet Connection – this is a really cool option.Similarly, to go directly to the recovery program, just hold COMMAND R when you start. You simply choose the “Recovery HD” one and it will launch the Recovery program. When you do that, you will see all of your Mac partitions. You can launch this by holding down OPTION when you start.

Once you install Lion, it creates a small hidden partition on your Mac.
