Converting to Dynamic Disk

          When you add a new hard disk to a computer and then start Disk Management, a wizard guides you through the initialization process, during which you select whether to have an MBR or a GPT partition style. Although you can change between partition styles at a later time, some disk conversions require you to reformat the drive.
          You should carefully consider the disk type and partition style that is most appropriate for your situation. Before you change the partition style, remember that you:
• Must be a member of the Backup Operators or Administrators group.
• Must back up the entire contents of the hard disk before making a change, which is true for any major change that you make to disk contents.
• Must ensure that disks are online before you can initialize them or create new partitions or volumes.
To bring a disk online or take it offline in Disk Management, right-click the disk name, and then click
the appropriate action.
• Can convert only from GPT to MBR if the disk does not contain any volumes or partitions.
• Should use Event Viewer to check the system log for disk-related messages.