If you are upgrading from Windows 7 to Windows 8 Consumer Preview (not recommended) then you have two options. You can either burn Windows 8 using the ISO files and the Windows 8 USB DVD Download Tool or you can download the “web installer” that also provides the product key needed to activate Windows 8
Please try installing Windows 8 Consumer using both options. If you get the same error, it is recommended that you create a new partition on your hard drive exclusively for Windows 8 – I also believe that the installation process cannot be customized, which means the installer will always try to install Windows 8 on C:/. It might be necessary (UNTESTED!) to change the drive letters and assign C: to an
1. Step Try to install again, using both options mentioned in the text above
2. Step Re-download the ISO
3. Step If possible try installing Windows 8 on a clean hard drive
4. Step Make sure you have over 20GB free disk space
What I did not like about the Windows 8 Consumer Preview installer is the fact that you cannot customize the installation path and by default it tries to install in C:/ – unless I’ve overlooked something when I used it.
We’ll look into this problem and let you know of a possible fix