DOCUMENT:Q71522 28-SEP-1999 [win95x] TITLE :Windows: AUTOEXEC.BAT Is Not Run During Boot PRODUCT :Microsoft Windows 95.x Retail Product PROD/VER:WINDOWS:3.0,3.0a,3.1,3.11 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows versions 3.0, 3.0a, 3.1, 3.11 ------------------------------------------------------------------------------- SUMMARY ======= The AUTOEXEC.BAT file is not run when you boot your computer if the "SHELL=COMMAND.COM" statement in the CONFIG.SYS file is missing the "/P" parameter. MORE INFORMATION ================ The "SHELL=" statement tells the system what command processor to load during boot up. Most often this is used to load the MS-DOS COMMAND.COM to increase the environment space. The correct syntax for this is: SHELL=C:\DOS\COMMAND.COM /E:512 /P In the example above, the "/E:" parameter is increasing the MS-DOS environment to 512 bytes (the default is 160 bytes). The "/P" parameter tells COMMAND.COM that this instance of itself is permanent. Without this parameter, COMMAND.COM would load itself into memory, then terminate that instance of itself. In doing so, the process of running the AUTOEXEC.BAT file is skipped. REFERENCES ========== "The MS-DOS Encyclopedia," pages 782-783. Microsoft Press, 1988. "Supercharging MS-DOS," pages 106-115. Microsoft Press, 1989. Additional query words: ====================================================================== Keywords : Technology : kbWin3xSearch kbZNotKeyword3 kbWin300 kbWin300a kbWin310 kbWin311 Version : WINDOWS:3.0,3.0a,3.1,3.11 ============================================================================= 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 1999.