DOCUMENT:Q77626  17-DEC-2000  [msdos]
TITLE   :Uninstalling After Deleting the OLD_DOS.1 Directory
PRODUCT :Microsoft Disk Operating System
PROD/VER:MS-DOS:5.x,6.0,6.2,6.21,6.22
OPER/SYS:
KEYWORDS:msdos

======================================================================
-------------------------------------------------------------------------------
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 
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SYMPTOMS
========

If you delete your OLD_DOS.1 directory and then use your MS-DOS version 5.0 or
later Uninstall disk to attempt to return to your previous version of MS- DOS,
you may receive the following message:

   Uninstalling MS-DOS n.n is no longer possible

   The information needed to restore your original version of DOS is no longer
   present on your hard disk. Please remove the Uninstall disk from your drive
   and press the ENTER key to restart your system.

WORKAROUND
==========

To recreate the OLD_DOS.1 directory and complete the uninstall process, you need
to have the following:

 - Your previous version of MS-DOS on floppy disks

 - Your MS-DOS 5.0 or later Uninstall disk

(NOTE: The Uninstall disk can only be used ONCE to uninstall back to your
previous version of MS-DOS. If you've already used it to uninstall before, the
following procedure cannot work.)

The Uninstall program works if you have an OLD_DOS.1 directory with a file named
README.NOW in it. If you don't have this file, do the following:

1. Type "MD OLD_DOS.1" (without the quotation marks) and press ENTER at the
   command prompt to create the OLD_DOS.1 directory in your root directory.

2. Type "CD \OLD_DOS.1" (without the quotation marks) and press ENTER to go into
   the OLD_DOS.1 directory.

3. Type "COPY CON README.NOW" (without the quotation marks) and press ENTER
   twice.

4. Press CTRL+Z, then press ENTER. The message should appear.

   1 file(s) copied

5. Put the disk with your previous MS-DOS version into drive A.

6. Type "COPY A:*.* C:\OLD_DOS.1" (without the quotation marks) to copy the
   files from the disk(s) into the OLD_DOS.1 directory. (Make sure the
   COMMAND.COM file gets copied there.)

7. Remove the DOS disk, insert the Uninstall disk in drive A, and reboot your
   machine. You should now be able to uninstall MS-DOS 5.0.

NOTE: Make sure that you do steps 5-7 if you want all of the utilities from your
previous version of MS-DOS. Without these steps, Uninstall only removes your
MS-DOS system files. Furthermore, you may run into problems booting up if your
COMSPEC variable is set to your DOS sub-directory and you didn't copy your
COMMAND.COM to that subdirectory.


Additional query words: 6.22 5.00 5.00a 6.00 6.20 un-install

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Keywords          : msdos 
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a
Version           : MS-DOS:5.x,6.0,6.2,6.21,6.22

=============================================================================

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