DOCUMENT:Q70753 17-DEC-2000 [msdos] TITLE :DELOLDOS Command and OLD_DOS Directory Creation Limit PRODUCT :Microsoft Disk Operating System PROD/VER:MS-DOS:5.x,6.0,6.2,6.21,6.22 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MS-DOS operating system versions 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22 ------------------------------------------------------------------------------- SUMMARY ======= In the Microsoft MS-DOS Upgrade for versions 5.0 and later, DELOLDOS command deletes all OLD_DOS.x directories residing in the root directory of the boot drive. Upon deletion of the these directories, DELOLDOS.EXE itself is also deleted from the directory it resides in. The MS-DOS Upgrade installation process can create a total of 99 old DOS directories named OLD_DOS.: OLD_DOS.1 ... OLD_DOS.99 The value is based upon the integer extensions of any previous OLD_DOS directories residing in the root directory of the boot drive, so that is the next integer available in order starting at 1. When the installation process attempts to create the 100th OLD_DOS directory, it instead replaces the last OLD_DOS directory made, creating a directory with the same name. MORE INFORMATION ================ If the current DOS directory in use is deleted prior to installation or not detected when installing, an OLD_DOS.x directory is still created when installing; however, it contains only the README.NOW file. Also, any non- DOS files put into the DOS directory aren't saved in the OLD_DOS.x during installation. Those files are put into the new installed DOS directory instead. Additional query words: 6.22 5.00 5.00a 6.00 6.20 ====================================================================== Keywords : Technology : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a Version : MS-DOS:5.x,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 2000.