DOCUMENT:Q96695 21-NOV-1999 [msdos] TITLE :Install Programs May Not Update Drivers with Multi-Config PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:6.0,6.2,6.21,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system versions 6.0, 6.2, 6.21, 6.22 ------------------------------------------------------------------------------- SUMMARY ======= Many software installation programs modify the CONFIG.SYS and AUTOEXEC.BAT files. Most installation programs that modify the CONFIG.SYS file add lines to either the top or the bottom of this file. If you are using multiple configurations, these modifications may cause problems. MORE INFORMATION ================ The most common problem occurs when an installation program updates a specific driver in the CONFIG.SYS file when multiple instances of that driver exist. Many installation programs update only the first or last occurrence of a driver. You can avoid multiple occurrences of device drivers in the CONFIG.SYS file by using a [COMMON] section. If you include a [COMMON] block at the end of your CONFIG.SYS file, you can usually avoid problems with installation programs that add lines to the bottom of the CONFIG.SYS file. Additional query words: 6.22 6.00 application setup multi-config multi config 6.20 ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 Version : MS-DOS:6.0,6.2,6.21,6.22 ============================================================================= 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.