There shouldn't be any reason that I know of why you couldn't install a partition manager program, such as Boot-It NG, inside your XP guest machine, then run it to create a partition of your virtual hard drive. However, it is even easier: if you click on the Tools menu of Windows Virtual Pc, then select settings, you will see that the XP Mode virtual machine is already set up to be able to have two other virtual drives; you only need to create them. In order to do that, the VM must be shut down. All you have to do is shut down the VM, using the method in the help documentation quote below, and then you will be able to have a second and third virtual hard drive allocated:
To shut down a virtual machine
1. Do one of the following:
- To shut down from an open virtual machine, from the toolbar of the virtual machine window, click Ctrl+Alt+Del. Or, you can press the CTRL+ALT+END key sequence.
- To shut down from a running virtual application, make sure the focus is on the application (click or restore it if necessary), and then press the CTRL+ALT+END key sequence.
2. In the window that appears, click Shut down.
3. The operating system will go through the shutdown sequence, and the resources will be released from the virtual machine.