The Undelete command recovers deleted files. It is done as safely as
 possible. If undelete discovers that the file header or blocks of the
 deleted file have been reused, the undelete process will stop.
 The /FILE, /IDENTIFIER or /OWNER qualifier can be used to select specific
 files. The /LIST qualifier can be used to generate a list of recoverable
 files without actually undeleting files.

 If a matching filename is found undelete will ask for a confirmation
 before undeleting the file. Multiple files can be undeleted with
 just one UNDELETE command. After a succesful undelete the file will
 be entered in the original directory if possible or in the
 [SYSLOST] directory.

 NOTE: The volume (set) will be locked for other users during the
 undelete command unless the /LIST qualifier is used.

 Syntax:

 	UNDELETE <device>/Qualifiers

1  –  Qualifiers

1.1    /IDENT=identifier

    Select file by identifier. This qualifier cannot be used in
    conjunction with /OWNER.

1.2    /FILE=<filename>

    Select file by filename. Wildcards may be used in the filename. If the
    /FILE qualifier is omitted DFU will use *.*;* as the filename.

1.3    /LIST(=output_file)

    Generate a list of recoverable files. This command will not lock
    the volume, and will not undelete any file.

1.4    /MARKED

    Select only files marked for delete.

1.5    /OWNER=<uic>

    Select file by owner uic. This qualifier cannot be used in conjunction
    with /IDENT.

1.6    /STATISTICS

    /STATISTICS
    /NOSTATISTICS (default)

    Controls whether cpu and I/O consumption of the
    command are shown.