I need what format did it used to use to revive my old Macintosh Plus. So I'm doing a research on what format did old Macintoshes used. (on hard drives or hdds). What I mean with this is what format did old macintoshes use back in the day, like a primitive version of hfs+ or something like that.

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    Your question, as it's currently written, is very difficult to understand. Can you please edit it to add additional info and clarify the problem? See How to Ask for tips.
    – fsb
    Commented Mar 25, 2018 at 13:15
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    This looks like an XY Problem, so can you describe in more details which problem you are trying to solve here (and what you will do with the information you get from the answer)?
    – nohillside
    Commented Mar 25, 2018 at 13:33
  • A good question for Retrocomputing ...
    – Solar Mike
    Commented Mar 25, 2018 at 13:48

1 Answer 1


You can’t get older than Apple File System with the first Mac.

The Plus ships with HFS so that’s the place to start if you just need that one model.

HFS Wikipedia article as well should cover all the classic Mac OS releases. So those two likely cover all the os from System 1 to System 7 so I would focus on what system you want to run on your Mac Plus (I’d start with System 6 if I were you) as opposed to what the filesystem might be. But maybe that’s all you need so start with MFS/HFS.

  • According to Macintosh Plus on Wikipedia, it used the the Hierarchical File System (HFS). Commented Mar 25, 2018 at 14:28
  • But MFS as well. Okay then, didn't know that my old Macintosh Plus used hfs.
    – Psionikal
    Commented Mar 25, 2018 at 14:29
  • Totally @user3439894 - hence the recommendation for System 6 which mandates HFS. The question is quite broad since it asks “what did old Macintoshes use” so I made it a little more general since that was doubling the possible formats.
    – bmike
    Commented Mar 25, 2018 at 14:30

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