Installing OS X Lion using a thumbdrive
Welcome back to Ashgadgets.wordpress.com. Today’s post will be about creating a USB thumb drive which you can use to install OS X lion on supported Macs.
First off, here are a list of things you need:
- A Mac running Snow Leopard version 10.6.6 or higher
- $30 to spare
- A thumb drive with a capacity of 5 Gigabytes or more.
- Download the Lion Update app from the Mac App Store
- Give the download some time, do something *productive* in those couple of hours.
- After it finishes downloading, open Finder and click on the Applications directory
- Scroll through the list until you see an “Install Mac OS X Lion” label.
- Right click and select: “Show Package Contents”
- Now follow this Linar Directory hierarchy: Contents > SharedSupport >
- Plug in your thumb drive and open Disk Utility. (A spotlight search should suffice)
- From the finder window, drag and drop the .dmg file you find in the SharedSupport directory into DiskUtility.
- Return to Disk Utility, select the USB drive and select the partition tab
- Click on the Current Scheme button and select single partition
- Set partition format to Mac OS Extended.
- Click on the options button below the partition table and select “GUID” as the partition table.
- Click “apply”
- Select the “Restore” button
- Drag “InstallESD.dmg” into the “Source” field
- Drag the partition you just created into the “Destination” field
- Select restore and wait for 10 minutes
- After the restoration is complete, restart your machine.


