Installing Windows 8.1 in Virtual Box With an Existing Windows 8.1 Hard Disk

Do you want to install Windows 8.1 without a CD but with a Hard Disk having Windows 8.1 preinstalled? use this method. This works with all the Windows OS. (Tested with Windows 7)

Download Disk2vhd utility from

http://technet.microsoft.com/en-us/sysinternals/ee656415

Open the Disk2VHD, deselect all the drives and check only System Drive (commonly C drive). Uncheck "Use VHDK" because Virtual Box doesn't support VHDK.

Change the VHD File Name directory if you don't have enough space in the default directory. Now click "Create"

Mine completed in 20 Minutes.

To add a New machine click New button in Oracle Virtual Box

You have to type Windows 8.1 in the Name text box (the Type and the Version will be chosen automatically). Click Next.

Keep the default RAM settings (1024 MB) or change if necessary (Necessary if you have 2GB RAM or below) and click Next.

To use the VHD we made check Use an existing Virtual Hard Disk File , Then click on the folder like icon on the left of the combo box.

Locate the VHD file you made and click Open or simply double click on the VHD file.

Just click Create. If you get an error you might not have unchecked the "Use VHDX" checkbox in disk2vhd.

You can use this method if you want to install Windows 8 in Virtual Box and not in HDD and your CD is lost or any other thing you like