DOCUMENT:Q251007 06-AUG-2002 [winnt] TITLE :Some Cluster Disks Are Not Available After Installing SP6 PRODUCT :Microsoft Windows NT PROD/VER::4.0,4.0 SP6a OPER/SYS: KEYWORDS:kberrmsg kbWinNT400PreSP7Fix kbWin2000SP2Fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server, Enterprise Edition versions 4.0, 4.0 SP6a ------------------------------------------------------------------------------- SYMPTOMS ======== After you apply Microsoft Windows NT 4.0 Service Pack 6 (SP6), some cluster disks may not come online. If the quorum disk is affected, the entire cluster does not start. The problem is most likely to occur after you "cold boot" the computer. If cluster logging is enabled, you may see an entry similar to the following example: Physical Disk : SCSI, error reserving disk, error 21. CAUSE ===== The partition table on the disk contains an invalid entry that is misinterpreted by the cluster disk driver. RESOLUTION ========== Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. To resolve this problem, apply the fix described in the following article: Q272569 System Process Loses Delayed-Write Data with Windows Clustering STATUS ====== Additional query words: mscs disappear missing ====================================================================== Keywords : kberrmsg kbWinNT400PreSP7Fix kbWin2000SP2Fix Technology : kbWinNTsearch kbWinNT400search kbWinNTSsearch kbWinNTSEntSearch kbWinNTSEnt400 kbWinNTS400search kbWinNTSEnt400SP6a Version : :4.0,4.0 SP6a Hardware : ALPHA x86 Issue type : kbbug Solution Type : kbfix ============================================================================= 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 2002.