HFS - Heirarchical File System, 1985. Directory support, up to 2TB disks. No more than 31 character filenames (still was a heck of a lot better than 8.3 in DOS!) Support became read-only in Mac OS X 10.6, and gone by 10.15
HFS+ - 1998. 8EB max volume size. 255 character filenames, with Unicode (UTF-16?). Journaling. Still (optionally and by default) case-insensitive (but case-preserving)
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