|  MS-DOS Err Msg: "Unrecoverable Error" Returning to MS-DOS 5.x (101763) 
 The information in this article applies to:
 
•  Microsoft MS-DOS operating system 6.0 
 
  This article was previously published under Q101763 
 SYMPTOMS 
After upgrading to MS-DOS 6.0 from MS-DOS 5.x, one way to return to
MS-DOS 5.x is to use the Uninstall disk created during the MS-DOS 6.0
upgrade process. However, if the Uninstall disk is unavailable and you
decide to follow the instructions on the original MS-DOS 5.x upgrade
disk by running the Setup program, you may receive the following
message:
 
   UNRECOVERABLE ERRORCannot identify your version of DOS.
 Returning to DOS.
 Press ENTER to continue.
 
 WORKAROUND To work around this problem, reboot your machine with a startup disk
containing system files of MS-DOS (version 2.11 to 5.x) and then run
the Setup program for MS-DOS 5.x. 
 
| Modification Type: | Major | Last Reviewed: | 11/22/1999 |  
| Keywords: | KB101763 |  
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