The OS of my Physical Machine is WinXP Professional. And I install "Virtual PC 2007" on my OS. I use "Virtual PC 2007" to run "Windows Vista (U-version)" Then I already added the HardDisk2 in the console of "Virtual PC 2007" But when I turn on "Windows Vista (U-version)" , I couldn't find HardDisk2 in "My Computer" Why? :-(