A dynamic disk's status is Foreign.
Cause: The Foreign status occurs when you move a dynamic disk to the local computer from another computer running Windows 2000, Windows XP Professional, Windows XP 64-Bit Edition, or the Windows Server 2003 operating systems. A warning icon appears on disks that display the Foreign status.
In some cases, a disk that was previously connected to the system can display the Foreign status. Configuration data for dynamic disks is stored on all dynamic disks, so the information about which disks are owned by the system is lost when all dynamic disks fail.
Solution: Add the disk to your computer's system configuration so that you can access data on the disk. To add a disk to your computer's system configuration, import the foreign disk (right-click the disk and then click Import Foreign Disks). Any existing volumes on the foreign disk become visible and accessible when you import the disk.