Will Mojave run under mac OS extended?

Discussion in 'macOS Mojave (10.14)' started by jwolf6589, Jun 10, 2018.

  1. jwolf6589 macrumors 65816

    jwolf6589

    Joined:
    Dec 15, 2010
    Location:
    Colorado
    #1
    My drive is still formatted as Mac OS extended. Will Mojave run or does it need to be converted to the new file system?
     
  2. chrfr macrumors 604

    Joined:
    Jul 11, 2009
    #2
    Mojave requires APFS and it will convert your disk automatically.
     
  3. jwolf6589 thread starter macrumors 65816

    jwolf6589

    Joined:
    Dec 15, 2010
    Location:
    Colorado
    #3
    Even if its a standard HDD?
     
  4. chrfr macrumors 604

    Joined:
    Jul 11, 2009
    #4
    Like I said, Mojave requires APFS. It will convert all boot disks.
     
  5. jwolf6589 thread starter macrumors 65816

    jwolf6589

    Joined:
    Dec 15, 2010
    Location:
    Colorado
    #5
    Will I get disk space back?
     
  6. Fishrrman, Jun 11, 2018
    Last edited: Jun 11, 2018

    Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #6
    chrfr wrote:
    "Mojave requires APFS and it will convert your disk automatically."

    I don't think this can be "categorically stated" as of yet.
    It's not definitely known whether or not Mojave will run under HFS+.
    Has Apple issued a statement to this effect?

    There may be a method to install it to an HFS+ volume that (so far) is undocumented or perhaps there's a terminal command to do it that is not widely known yet.

    I'm thinking that one could:
    1. Install Mojave as APFS
    2. Use CarbonCopyCloner to clone the install to an HFS+ formatted volume.
    3. Boot and run Mojave that way.

    Until someone tries this and gives us a report.... it's "as of yet unknown".

    EDIT:

    I tried opening CCC 5.1.2 in Mojave.
    It opened, but gave the warning that it wasn't certified for use with the [new] OS yet. After the warning, it wouldn't do anything.
    So... I'll guess that we'll have to wait for a version of CCC that IS certified for use with Mojave before the above can be tried...

    EDIT2:
    Please see this thread:
    https://forums.macrumors.com/threads/benefits-of-apfs-on-fusion-drive.2122751/#post-26143524

    Looks like it can be done.
    CCC cannot do it at this time.
    But it looks like SuperDuper -can-.
     
  7. wazzafrog macrumors newbie

    wazzafrog

    Joined:
    Today
    Location:
    Auckland - New Zealand
    #7
    This thread talks about how it can be done. Not sure of results after updates though
    https://discussions.apple.com/thread/8639017
     

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