"I don't have any documentation yet to firmly support this statement, but my impression is that the Macintosh File System was based upon the Lisa file system wh

"I don't have any documentation yet to firmly support this statement, but my impression is that the Macintosh File System was based upon the Lisa file system which in turn was similar to a file system developed by Xerox for its Star workstation." MFS uses a linked-list for file blocks, similar to MS DOS. This is not a coincidence according to folklore: https://www.folklore.org/StoryView.py?project=Macintosh&story=Mea_Culpa.txt https://www.folklore.org/StoryView.py?project=Macintosh&stor... "Our first file system used a simple data structure that didn't scale well to large drives (in fact, it was suggested to us by Bill Gates in July 1981)"