Microsoft KB Archive/101763

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MS-DOS Err Msg: "Unrecoverable Error" Returning to MS-DOS 5.x

Article ID: 101763

Article Last Modified on 11/22/1999


  • Microsoft MS-DOS 6.0 Standard Edition

This article was previously published under Q101763


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:

Cannot identify your version of DOS.
Returning to DOS.
Press ENTER to continue.


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.

Additional query words: 6.00 4.0 4.01 5.0 5.0a 5.00 5.00a

Keywords: KB101763