Update 9/14/2011: Installing Mac OS X Lion within a virtual machine is made significantly easier with VMWare Fusion 4. All you need to do is: Go to the File menu and select “New” Locate the “Install Mac OS X Lion .app” (here’s how to redownload Lion from the App Store) in your /Applications/ folder and drag that into the “New Virtual Machine Assistant” window Choose Continue and select your settings, and boot the VM Installation of Lion is extremely fast, and you are then able to boot and use your virtual OS X 10.7 install. The older method is repeated below for posterity sake: If you want to run Mac OS X 10.7 Lion Developer Preview but you don’t want to bother setting up another partition or upgrading your existing Mac OS X 10.6 installation, you can go with a third option: running Lion in a virtual machine with VMWare. This is really only recommended for more technically inclined Mac OS X users. If you’re serious about Lio...
Install Mac OS X 10.7 Lion in a Virtual Machine with VMWare Fusion 4