"Internal Error - Disk Group Exists and Is Imported" Error Message While Importing Foreign Disk

When you use Windows 2000 Disk Management to import dynamic disks that are displayed as foreign disks, you may receive the following error message: After you accept the error message, the dynamic disks that you are importing are still displayed as foreign disks.

This behavior can occur if you are trying to import foreign disks that use the same disk group name as that of the current computer's disk group.

For additional information about disk groups, click the article number below to view the article in the Microsoft Knowledge Base:

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

If your system/boot drive is still a basic disk, follow these steps to correct this condition:

1. Start Registry Editor (Regedt32.exe).
2. Click the following registry key:
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\dmio\Boot Info
3. Under the Boot Info key, delete the "Primary Disk Group" key.
4. Quit Registry Editor, and then reboot the computer.
5. After the reboot, try to import the foreign disks again.

If your system/boot drive is a dynamic disk, move the foreign disks to another Windows 2000-based computer that has a different disk group name to import them.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.