Upgrade Windows 8 Consumer Preview to Windows to Windows 8 Release Preview

Download Windows 8 Release Preview, burn ISO on a disk and follow the instructions. 

What versions of Windows can be upgraded to Windows 8 Release Preview?

You can upgrade the following operating system to Windows 8 Release Preview.
  • Windows 8 Consumer Preview
  • Windows Developer Preview
  • Windows 7
  • Windows Vista
  • Windows XP

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