DOCUMENT:Q75837 22-NOV-1999 [msdos] TITLE :Using BACKUP/F After Installing the MS-DOS 5 Upgrade PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:5.0 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system version 5.0 ------------------------------------------------------------------------------- SUMMARY ======= After installing the Microsoft MS-DOS 5 Upgrade, the BACKUP command can return the message "Incorrect DOS version" if you try to format a disk during the backup procedure using the /f[:size] parameter. MORE INFORMATION ================ BACKUP can appear to work correctly for the first few disks, but when the BACKUP command tries to back up the OLD_DOS.X directory it attempts to use the older version of FORMAT.COM. To correct the problem, remove or rename all old FORMAT.COM files from your computer OR delete the OLD_DOS.X directory using DELOLDOS.EXE. To find all occurrences of FORMAT.COM, type the following from the root directory: " DIR/S FORMAT.COM " (without the quotation marks) More information on the BACKUP command can be found in the "Microsoft MS-DOS User's Guide" on pages 370-373. Additional query words: 5.00 ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS500 Version : MS-DOS:5.0 ============================================================================= 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 1999.