Unless I am missing something, disk compression and, indeed, ordinary
file compression (e.g., zip, arj etc.) solve the problem of wasting
disk space because of a minimum cluster size. How?  They are ways
to make the OS treat a single file as if it were a directory.

To the compression program, a compressed file is an archive with
a lot of different files on it. To the OS, it is just a big file
like any other file. With disk compression, there is only one big
file for a whole logical drive. So the only cluster that is not full
with data is perhaps the ``last'' one.

Yes?

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