Creating an Empty VM

VirtualBox has been installed.

Open VirtualBox and click New. In the displayed Create Virtual Machine dialog box, enter the VM name, select the OS type and version, and click Next.
Take Windows 2008 64bit as an example. The OS type must be Microsoft Windows.

Ensure that the selected version is the same as that of the OS to be installed.

Figure 1 Creating a VM
In the Memory size dialog box, set the memory size and click Next.
For details about how to set the memory, see the VM configuration and official requirements for the OS. In this section, the memory is set to 2048 MB.

Figure 2 Setting the memory size
In the Hard disk dialog box, select Create a virtual hard disk now and click Create.
Figure 3 Creating a virtual hard disk
In the Hard disk file type dialog box, select VHD as the file type of the virtual hard disk and click Next.
Figure 4 Selecting the file type of the virtual hard disk
In the Storage on physical hard disk dialog box, select Dynamically allocated and click Next.
Figure 5 Selecting the disk allocation mode
In the File location and size dialog box, set the disk size and storage location.
For example, you can set the disk size 25 GB.

Figure 6 Setting the disk location and size
Click Create.