This tutorial explains the steps required to create simple hard disk partition on Windows 8 Consumer Preview.
Click the Settings option available on the Windows 8 Sidebar.
Then click the Control Panel option under Desktop. In the Control Panel Window navigate to Administrative Tools option under System and Security settings.
Click the Create and Format hard disk partitions under Administrative Tools.
In the Disk Management window, right click on the Unallocated Disk and select New Simple Volume from the menu list.
Click Next button to continue with the New Simple Volume Wizard.
Specify the Volume size then click the Next button.
Assign a drive letter for the new Volume and click the Next button.
In the Format Partition step, choose the whether you want to format the Volume. In the above example, I have selected “Format this volume” option, choose “NTFS” for the File system and provided a Volume label also opted for a quick format.
Click the Next button will display the following confirmation screen.
The process will be completed after clicking the Finish button and the new volume should be reflected in the Disk Management screen.