If you install Windows 8 Release Preview using the Setup program, you will only see one option for what you can keep: * Nothing If you install Windows 8 Release Preview from within the Consumer Preview using installation media, your only option will be to perform a Custom install. At this point, you have a few options: 1. As long as you do not format your hard drive, you can continue with the install and then retrieve your data from the Windows.old folder. After you install Windows 8 Release Preview, click on this link to run a Troubleshooting Pack which will automatically retrieve your personal files from the Windows.old folder and copy them back to their original location. Information about how to retrieve files from the Windows.old folder manually in Windows 8 can be found at the Windows 8 Release Preview FAQ: http://windows.microsoft.com/en-us/windows-8/faq#section2. 2. If you want to use Windows Easy Transfer to migrate your personal files only, please follow the steps to migrate here: How to use Windows Easy Transfer to migrate your personal files to Windows 8 Release Preview. Please note that we do not recommend using Windows Easy Transfer to move your settings from Windows 8 Consumer Preview to Windows 8 Release Preview. Doing so can potentially cause Windows 8 Release Preview to not function properly.