DOCUMENT:Q131337 08-AUG-2001 [winnt] TITLE :STOP Msg: 0x0000007B w/ Quantum Empire Drive and Adaptec 2940 PRODUCT :Microsoft Windows NT PROD/VER:3.50 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Workstation version 3.5 - Microsoft Windows NT Server version 3.5 ------------------------------------------------------------------------------- SYMPTOMS ======== Installation of Windows NT 3.5 on a Quantum Empire hard drive connected to an Adaptec controller fails with the following STOP Message: STOP 0x0000007B INACCESSIBLE_BOOT_DEVICE CAUSE ===== The STOP Message occurs because the Adaptec controller is configured for a maximum synchronous transfer rate (Max Sync Xfer Rate) of 10 MB (megabytes) per second. According to Quantum technical support, the error is due to the clock on the Adaptec controller that allows the adapter to negotiate a Max Sync Xfer Rate of 10.6 MB/sec. The digital filter on the hard drive returns an error to the operating system because it is set for a Max Sync Xfer Rate of 10.2 MB/sec. WORKAROUND ========== There is updated firmware for the Quantum Empire drive which fools the SCSI controller into a connection of 8 MB/sec. when it is set for 10 MB/sec. The firmware upgrade may be obtained from Quantum by calling their technical support line at (800) 826-8022. You can also work around this problem by setting the Max Sync Xfer Rate on the Adaptec controller at or below 8 MB/sec. or setting Initiate Sync Negotiation to "No." The products included here are manufactured by Adaptec and Quantum, vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these product's performance or reliability. Additional query words: prodnt 3.5 disk hang complete 2100S ====================================================================== Keywords : Technology : kbWinNTsearch kbWinNTWsearch kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTSsearch kbWinNTS350 kbWinNTS350search Version : 3.50 ============================================================================= 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 2001.