In this build, you will only get a choice of where to install Windows 8 if installed from boot during a clean or dual boot install. If installed from within say Windows 7 or Vista, it will replace it with Windows 8 without an option of where to install it.
Back and using W8 with Tools. That was quick and it did reboot just as soon as i finished my previous post. I wonder if there is a switch that can be put in to ask for reboot like with most installations.
I tested both command switches in a elevated command prompt from within a Windows 7 VM to install Windows 8 on another partition, and here are the results I got.
setup.exe /noreboot -
When it got to the first restart point, the installation stopped and you had to manually restart the computer to finish the installation. However, from this point on, it still restarted the computer automatically as normal.
setup.exe /unattend -
The installation would go as far as "Setup is starting", then shortly gives the error below and cannot continue with the installation. This one was a complete failure.
Are you trying to upgrade to the 32-bit or 64-bit Windows 8 Developer Preview?
Since you have 64-bit Windows 7 installed, you would need to be upgrading to the 64-bit Windows 8 Developer Preview to have the options like in step 5.
Personally, since Windows 8 is still only a developer preview, I would recommend that you dual boot with it instead if you have the HDD space to do so. Windows 8 is really not recommended to be your primary OS since it is only a developer preview.