On Fri, 8 Dec 2017 18:07:41 +0000 (UTC), Kiwi User
 declaimed the following:

>Noted. I started with mainframes in 1968, when what we now call a
>'partition' was known as a 'diskfile' and allocated and initialised with
>programs that were equivalent to a partition editor, e.g. parted, and a
>formatter, e.g. mke2fs. As a concession to programmers, you could store
>program source in 'subfiles' withing a 'diskfile'
>
 Sounds suspiciously like what I know as "partitioned data set" -- of
which my only exposure was a utility for LS-DOS/TRS-DOS which created a
file on the disk, said file itself then having an internal directory
structure containing sub-files (take into account that subdirectories were
not an OS feature; each disk directory had a limit to the number of files
it could reference -- a PDS allowed storing lots of small application files
without using a lot of limited OS directory entries, and without lots of
wasted partially filled last sectors on the files).

 Granted, that form of PDS was likely inspired by the IBM mainframe
version. The LS-DOS/TRS-DOS version was a third-party package to
create/modify them (though much of the OS command set was stored in a
similar PDS format, just no tools provided to extract/build such files)
--
 Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

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