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    AST RESEARCH, INC.              TECHNICAL BULLETIN # 0955               8-1-94

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                                 ASCENTIA 900N ASTDU PROGRAM ERROR

    PROBLEM:        After creating the ZDISK Utility diskette, the ASTDU program
                    will display the message:

                                 "Unable to access file C:\ASTDU\".

    CAUSE:          There are extra blank lines at the end of the ZDISK110.AST.
                    The ASTDU program is interpreting these blank lines as a
                    filename, therefore, there is no filename indicated in the
                    error message.

    SYSTEMS
    AFFECTED:           AST                                               REVISION
                    PART NUMBER           DESCRIPTION                       LEVEL
                    501299-2XX      ASCENTIA 900N 4/50 CS10                  All
                    501300-3XX      ASCENTIA 900N 4/50 CT9                   All
                    501302-2XX      ASCENTIA 900N 4/75 CS10                  All
                    501304-3XX      ASCENTIA 900N 4/75 CT10                  All

    SOLUTION:       Click OK and ignore this message.  The diskette has already
                    been created successfully.

                    NOTE: The file ZDISK110.AST, located on AST’s BBS, has been
                          updated to eliminate this error message.  This file is
                          the image file and should be copied into the
                          C:\ASTDU subdirectory.