•To open command prompt, click Start, point to All Programs, point to Accessories, and then click Command Prompt.
•You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
•To extend a basic volume, it must be formatted with the NTFS file system
•You can only extend a basic volume onto the same disk.
•You can only extend a basic volume if it is followed by contiguous unallocated space.
•For more information about DiskPart, see Related Topics.