Article ID: 948911 - View products that this article applies to.
Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/322756/ )How to back up and restore the registry in Windows XP and Windows Vista
You connect an external hard disk that is based on the Institute of Electrical and Electronics Engineers, Inc. (IEEE) 1394 standard to a Windows Vista-based computer. However, the external hard disk is not detected.
This symptom occurs on dual-capability external hard disks that can be connected by using an IEEE 1394 connection or a USB connection. However, this symptom only occurs when the external hard disk is connected by using an IEEE 1394 connection.
This problem occurs if the external hard disk does not support the MODE_SELECT parameter.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
To resolve this problem, set the LegacyFlags registry value to a hexadecimal value of 200. To do this, follow these steps:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 948911 - Last Review: May 28, 2008 - Revision: 2.0