DOCUMENT:Q265002 28-OCT-2000 [winnt] TITLE :INFO: Multiple LUN USB Storage Devices Are Not Supported PRODUCT :Microsoft Windows NT PROD/VER:WINDOWS: OPER/SYS: KEYWORDS:kbDDK kbOSWin2000 kbDSupport kbGrpDSNTDDK kbUSB ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows 2000 Advanced Server - Microsoft Windows 2000 Server - Microsoft Windows 2000 Professional - Microsoft Windows 98 ------------------------------------------------------------------------------- SUMMARY ======= Windows 2000 and Windows 98 do not support multiple logical unit number (LUN) universal serial bus (USB) storage devices. MORE INFORMATION ================ The driver for USB mass storage devices, Usbstor.sys, follows the USB Mass Storage Specification 1.0. This driver implements both Bulk Only and CBI specifications. However, Usbstor.sys doesn't support multiple LUNs. Additional query words: ====================================================================== Keywords : kbDDK kbOSWin2000 kbDSupport kbGrpDSNTDDK kbUSB Technology : kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000Serv kbwin2000ServSearch kbwin2000Search kbwin2000ProSearch kbwin2000Pro kbWin98search kbWinAdvServSearch kbWin98 Version : WINDOWS: Issue type : kbinfo ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.