A few things you need to know before you start:
Install Windows OS on VirtualBox
Step 1: Download the Windows OS edition which you want to install, and VirtualBox (Windows Host). Next, install VirtualBox on your computer and open the application.
Step 2: Click on “New” from the Toolbar, and you will see the Virtual machine creation wizard. Click Next.
Step 3: Enter a name for your VM then select the OS type. For Windows 32-bit, select “Windows” and for Windows 64-bit edition select Windows (64-bit) from the drop down menu.
Step 4: Adjust the Memory (RAM) you want to allocate for your VM.
Step 5: Now we need to create the Virtual Hard drive. Leave the default option as shown in the below screenshot and click Next.
Step 6: Select the type of Virtual hard drive you want to create. I have selected VHD (Virtual hard drive).
Step 7: Next, select the storage allocation for the VHD as “Dynamically Allocate”.
Step 8: In the next step you can allocate the size of your VHD. The recommended size is 20GB.
Step 9: Finally you will see the summary of the configuration. Click Create to proceed.
Step 10: Now you can see your Virtual Machine configuration in the Virtual Box Manager. Select your VM and click on Start from the toolbar.
Step 11: You’ll see an Information message. Click OK to proceed.
Step 12: You’ll see the “First Run Wizard”. Click Next.
Step 13: Now you have to select the installation media. If you have Windows burned to a disk, select the drive or else click on the browse button and select the ISO image. If not, from Devices > CD/DVD Devices > Choose the downloaded ISO file.
Step 14: Next, click on Start. It will take you to the Windows setup screen.
That’s it; you will have successfully created Virtual Image for Windows. I also have put together a video tutorial. If you have any questions, please do let us know. Go here if you want to learn how to Remotely Control a Windows Virtual Machine. This link may also interest you:
How to speed up a VirtualBox Virtual MachineHow to install Windows on Mac OS X using VMware Fusion.