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From: lewan@utcs.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Subdirectories and DOS 2.0+
Message-ID: <1987Jan17.180036.13810@utcs.uucp>
Date: Sat, 17-Jan-87 18:00:36 EST
Article-I.D.: utcs.1987Jan17.180036.13810
Posted: Sat Jan 17 18:00:36 1987
Date-Received: Sat, 17-Jan-87 18:44:26 EST
Organization: University of Toronto Computing Services, general purpose UNIX
Lines: 10
Checksum: 64465

Earlier versions of DOS (up to 2.xx) allowed use of function call 0FH
to open subdirectories as files. (Function call 0FH uses the old FCB
method of opening files). In fact, PC Tech Journal had an article on this
some time in '84. However, later versions of DOS (starting with 3.0, 3.1, or
3.2; I'm not sure) somehow disabled this feature.  That is, it is no
longer possible to use function call 0FH to read from or write to a
subdirectory directly.
     Does anybody know how to trick DOS so that one can open a subdirectory
as a file?  Perhaps 0FH still works with a "secret" attribute, or perhaps
there is another (better) way ..