In Vista, Disk Management is part of the Computer Management console in Administrative Tools.
To open Disk Management, follow these steps
Choose Start–>Control Panel to open Control Panel.
Click the System Maintenance link, and then click Administrative Tools to open the Administrative ools folder.
Click Computer Management to open the Computer Management window.
In the Computer Management pane, expand Storage, and then click Disk Management.
The Disk Management tool, which is displayed in the upper right pane of the Computer Management window, gives you a graphical representation of the hard disks and CD-ROM devices in your computer. You can, however, customize the way information is presented in a variety of ways.
The Disk Management window is in four parts. On the left is the Computer Management pane of the Computer Management console. The lower pane contains the information for all the physical disks installed in the computer, excluding floppy drives. The upper pane contains descriptions of those disks, including data on the amount of space used and free, the type of file system, and the health of that system. The right pane contains a list of actions you can perform. The list changes based on the object you select.
To use Disk Management to create or delete partitions, format drives, and create striped or volume sets, simply click the disk that you want to modify, and select the change that you want to make from the Action menu or Actions pane. Or you can right-click the drive that you want to modify, and then select the appropriate action from the context menu.