DOCUMENT:Q154647 10-AUG-2001 [winnt] TITLE :Setup Halts with "Windows Has Disabled Direct Disk Access" PRODUCT :Microsoft Windows NT PROD/VER:3.5 3.51 4.0 OPER/SYS: KEYWORDS:kbsetup ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows NT Server versions 3.5, 3.51, 4.0 - Microsoft Windows NT Workstation versions 3.5, 3.51, 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you are installing Windows NT Workstation or Server version 4.0 from a flat directory on the hard disk, Setup may halt with the following message after setting the location of the source files: Windows has disabled direct disk access to protect your long file names. To override this protection, see the Lock /? Command for more information. The system has been halted. Press CTRL-ALT-DEL to restart your computer. CAUSE ===== This behavior can occur if the Microsoft Windows 95 or Microsoft Windows 98 system files have been installed on the hard disk. RESOLUTION ========== Restart the computer, and then type "lock c:" (without quotation marks) at the command prompt. Windows returns the following message: WARNING: The lock command enables direct disk access by programs that can CORRUPT file names and/or DESTROY disk data, resulting in the loss of files on your disk. Are you sure (Y/N)? Press Y to return to the command prompt, and then run Windows NT Setup again. MORE INFORMATION ================ Windows 95/98 includes volume-locking code to protect long file names from programs that make absolute INT25 read and INT26 write disk calls by- passing the FAT. The Windows 95/98 Command.com includes a LOCK command to allow you to perform an exclusive read/write lock for use with programs that do not use the volume-locking APIs included in Windows 95/98. ====================================================================== Keywords : kbsetup Technology : kbWinNTsearch kbWinNTWsearch kbWinNTW400 kbWinNTW400search kbWinNT351search kbWinNT350search kbWinNT400search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTSsearch kbWinNTS400search kbWinNTS400 kbWinNTS351 kbWinNTS350 kbWinNTS351search kbWinNTS350search Version : 3.5 3.51 4.0 ============================================================================= 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.