I have a Samsung Series 7 Chronos laptop with the Express cache feature(8GB on board SSD) for faster boot. For several days I wasn't able to load set up a dual boot on a VDH, using this technique from Scott Hanselman.
I always got this errror
"Setup was unable to create a new system partition or locate an existing system partition. See the Setup log files for more information".
I think it has to do with the fact that this laptop is considered to have two hard disks and there is some discussion on the internet that recent versions of windows has a problem with two hard disks attached to the computer at the same time. The resolution was to just detach one of them before installing windows. However, this was not an option on the laptop.
So, I used VirtualBox and loaded Windows 8 Preview as Virtual Machine.But, it killed the joy of the new UI. It was okay to do some Window 8 Application Coding. But the UI was very jerky. I hated it.
Then one fine day, on my quest to resolve this issue, I bumped into this aticle
It involves some powereshell, but it is just running some commands.
Now, I am dual booting Wndows 8 Consumer Preview and it is FAST and BEAUTIFUL.