Yesterday I wrote a post “How To Re-Download Mac OS X Lion & Create a Bootable Install DVD” and it seems to be helping a lot of people out there. So, sometimes it is even more helpful to create a video that explains the process, so I quickly put one together. Also, a few users were wondering how to create a bootable USB Thumb Drive with the same installer so I have added those steps to this post.
Note: if you are looking for instructions for Mac OS X 10.8 – Mountain Lion – please see this post.
First, be sure that you read through the first post so that you understand the steps.
The video below, which is also available on YouTube, shows 3 items:
- How to re-download Mac OS X Lion
- How to burn a bootable Install DVD with Lion
- How to create a bootable Install USB Thumb Drive with Lion
Sorry for the blurry quality.
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How to Create a Bootable USB Thumb Drive
The steps are very similar to burning a bootable DVD. BE SURE that you have a large enough USB Thumb Drive (the one shown in the video and the example below was NOT large enough at 4 GB).
- Download the Lion installer from the App Store (see the steps on my previous post)
- Move the Installer out of the Applications folder (e.g., to your Desktop)
- Right-click on the Installer and select “Show Package Contents”
- Within the package, go to the “SharedSupport” folder
- Copy the “InstallESD.dmg” file to your Desktop
- Launch Disk Utility
- Insert your USB Thumb Drive (you can format it if you want)
- Click “Restore”
- Choose the “InstallESD.dmg” image
- Drag the partition on the USB drive from the left onto the Destination field and click RESTORE.
That’s it! Unfortunately, I did NOT have a large enough USB Thumb Drive (mine was only 4 GBs). So be sure you have a large enough thumb drive for this (perhaps 6GB).
Be sure to share this and my previous post with others!
HTD says: I’m really enjoying Lion! How about you?