A 1394 storage device with more than one Logical Unit Number (LUN) may stop functioning if another 1394 device is either inserted or removed from the computer.

Back to the top

When a 1394 bus reset occurs after a device is inserted or removed, the 1394 mass-storage driver (Sbp2port.sys) must reconnect to each LUN on a 1394 mass-storage device. 1394 mass-storage devices can only handle one reconnect request at a time. The Sbp2port.sys driver often submits more than one request a time, one for each LUN on the device. The mass-storage device ignores the multiple reconnect requests, and only reconnects the first LUN. Because of this, other LUNs on the device are not reconnected, and become non-functional.

Back to the top

To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: To resolve this problem, obtain the latest service pack for Windows XP. For additional information, click the following article number to view the article in the Microsoft Knowledge Base: The English version of this fix should have the following file attributes or later:

  Date         Time   Version        Size    File name     Operating System
  -------------------------------------------------------------------------
  11-Mar-2002  09:38  4.10.0.2227    36,528  Sbp2port.sys  Windows 98 
                                                           Second Edition
  26-Feb-2002  11:21  4.90.3002.0    36,720  Sbp2port.sys  Windows 
                                                           Millennium 
                                                           Edition (Me)
  22-Mar-2002  09:11  5.0.2195.5236  34,352  Sbp2port.sys  Windows 2000
  20-Dec-2001  16:40  5.1.2600.26    37,760  Sbp2port.sys  Windows XP
				

Notes for Windows 98 Second Edition

Before you install the update that is described in this article, you must install the updates that are described in the following Microsoft Knowledge Base article:

Back to the top

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 3 (SP3) and Microsoft Windows XP Service Pack 1 (SP1).

Back to the top

For additional information about Windows 98 and Windows 98 Second Edition hotfixes, click the article number below to view the article in the Microsoft Knowledge Base: For additional information about Windows Me hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

Back to the top