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  1. #1
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    krs's Avatar
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    Upgrading from El Capitan to Mojave - 25GB disappeared.
    I upgraded my 2012 Mini a few days ago - from El Capitan, 10.11.6 to Mojave, 10.14.6

    Things seem to be going well, but I just noticed that I somehow ended up with rought 25GB of additional free space on my hard drive.

    Free space on internal 500GB original spinner drive is 66.28GB (on El Capitan)
    Free space on external 500GB SSD is 91.19GB (on Mojave)

    Is that anything to be concerned about?
    Or was the extra 25GB on the spinner drive just useless trash that Migration assistant ignored?

    Anyone else has that type of experience when migrating?

    Get Info - left spinner, right SSD

    Mac HD Space.jpg
    Last edited by krs; 05-27-2020 at 12:54 PM. Reason: Added Get Info

  2. #2
    Upgrading from El Capitan to Mojave - 25GB disappeared.
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    What does it show when in Disk Utility? Also, are you booting from the internal AND external, when you did the Get Info, in those images? Or were you only booted from then internal/external and did the Get Info?
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.
    PS: When there is an accident or error, is the tool to blame or is the fool to blame?

  3. #3
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    krs's Avatar
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    The GetInfo images I posted were taken while booted into Mojave.

    I was initially going to boot back into El Capitan for the GetInfo for the spinner drive, but then thought - why bother, the information should be the same.
    And I have booted back and forth into El Capitanon the spinner and Mojave on the SSD more times in the last three days than in the last six years running El Capitan

    I'm in Mojave right now and when I check Disk Utility I get the exact same numbers.
    If the difference was only a few GB I wouldn't think about it too much, but around 25GB sounds like an awful lot.

  4. #4
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    ferrarr's Avatar
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    What about the folders you have excluded from Time machine, if any?

    Obviously, you would have to check El Captain for that info.
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.
    PS: When there is an accident or error, is the tool to blame or is the fool to blame?

  5. #5
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    krs's Avatar
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    I don't use time machine.

    What I did:
    1. Install Mojave on a new 500GB external SSD I had just bought, connected to the Mini via USB 3.0
    2. After Mojave was installed, used Migration Assistant to move everything from the Mini internal 500GB spinner drive to the external with Mojave. That took close to 5 hours (over night)
    3. Booted into Mojave on the external by holding down the option key and using the Mini that way.

    Desktop in Mojave looks the same as on El Capitan on the spinner.
    Only problem app identified during the migration was Gutenprint (which I didn't even know I had - certainly not something I use)
    The only other difference I noticed so far was that Grab was replaced by Screenshot. I subsequently transferred Grab from El Capitan to Mojave.
    And the only difference I would expect in the used/free space on the hard drives would be the difference in the size of the two macOSs, Mojave vs El Capitan - that sure wouldn't account for 25GB

  6. #6
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    chscag's Avatar
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    @krs:

    When I first saw your title to this thread, it appeared to me that you lost 25GB in the upgrade. However, you're saying you gained 25GB instead. Perhaps you may want to change the title?

  7. #7
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    krs's Avatar
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    @chscag - I was debating how to phrase the title when I first posted.

    I decided against using the terminology you're suggesting because I thought "Gaining 25GB" sounds positive.
    As far as I'm concerned, right now that extra 25GB on the SSD is a 'negative' until I understand what actually happened and I didn't loose a chunk of data during migration.

    I don't recall ever seeing anyone post that they picked up a fairly big chunk of additional hard drive space by upgrading macOS.
    I remember SnowLeopard was quite an improvement over the previous versions, ran faster and cleaner, but SL was mostly a clean up app - that doesn't seem to be the case with Mojave.

    I had hoped that perhaps someone on the forum hada similar experience upgrading to Mojave.
    Next step may be to compare the size of the major folders in Mojave and El Cap to see if anything stands out.

  8. #8
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    ferrarr's Avatar
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    You are going to have to manually compare folders across both drives. Start with Applications, Library, System, and Users. If there is no difference in any of them, then it would be a hidden file/folder.
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.
    PS: When there is an accident or error, is the tool to blame or is the fool to blame?

  9. #9
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    chscag's Avatar
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    I decided against using the terminology you're suggesting because I thought "Gaining 25GB" sounds positive.
    As far as I'm concerned, right now that extra 25GB on the SSD is a 'negative' until I understand what actually happened and I didn't loose a chunk of data during migration.
    No problem. I wasn't sure that you meant to say what you said. Thanks for clarifying.

  10. #10
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    pm-r's Avatar
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    Things seem to be going well, but I just noticed that I somehow ended up with rought 25GB of additional free space on my hard drive.

    Free space on internal 500GB original spinner drive is 66.28GB (on El Capitan)
    Free space on external 500GB SSD is 91.19GB (on Mojave)

    How did you clone or migrate your data and what applications did you use???


    Don't forget that some SSD manufacturers add a substantial amount of additional SPARE storage chips to replace any dead or dying storage cells that are made invisible to the user.

    I'm just wondering if that could have confused the Get Info space counter or some such thing???

    Just letting the old brain wander and monitor the situation with some possible reasoning here...





    - Patrick
    ======

  11. #11
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    krs's Avatar
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    Quote Originally Posted by pm-r View Post
    How did you clone or migrate your data and what applications did you use???
    I explained that in post #5 - I just used Migration Assistant to transfer the data from the 10.11.6 internal spinner to the 10.14.6 external SSD.
    Don't forget that some SSD manufacturers add a substantial amount of additional SPARE storage chips to replace any dead or dying storage cells that are made invisible to the user.

    I'm just wondering if that could have confused the Get Info space counter or some such thing???
    I doubt it - SSDs have been around for too long a time for that to be an issue.

    I started to look at the size of the individual folders and comparing them.

    Most are dead on - ie same size in Mojave and El Cap.
    The system folder in Mojave is about 3GB larger than El Cap which is understandable - but that is going in the wrong direction anyway.
    The biggest differenceright now is in the user library and the mail folder - on El Cap I had a V2 and V3 sub-folder under mail, on Mojave it's a V2 and a V6. But the big difference is that the library mail folder in Mojave is about 7GB smaller than the library mail folder in El Cap.
    I wonder if that is just due to better compression/storage or if I'm actually loosing messages.
    I need to boot back into ElCap to see if there is a difference in the message count.

  12. #12
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    Randy B. Singer's Avatar
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    Quote Originally Posted by krs View Post
    @chscag - I was debating how to phrase the title when I first posted.

    I decided against using the terminology you're suggesting because I thought "Gaining 25GB" sounds positive.
    As far as I'm concerned, right now that extra 25GB on the SSD is a 'negative' until I understand what actually happened and I didn't loose a chunk of data during migration.
    ...
    When you upgrade to a newer version of the Mac OS, after the upgrade has been completed, the original installer program (which is quite big) that resided in your Applications folder is automatically deleted.
    Randy B. Singer
    Co-author of The Macintosh Bible (4th, 5th, and 6th editions)
    Mac OS X Routine Maintenance http://www.macattorney.com/ts.html

  13. #13
    Upgrading from El Capitan to Mojave - 25GB disappeared.
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    Quote Originally Posted by Randy B. Singer View Post
    When you upgrade to a newer version of the Mac OS, after the upgrade has been completed, the original installer program (which is quite big) that resided in your Applications folder is automatically deleted.
    Yes, but.....

    I installed from a USB Mojave installer Flash Drive
    and
    The Application folder size in El Capitan and Mojave are the same
    and
    I just checked, the Mojave installer at 6.03GB is still in the Application folder on the SSD (running Mojave)

  14. #14
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    Randy B. Singer's Avatar
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    Quote Originally Posted by krs View Post
    Yes, but.....

    Okay, so we still need to find what's different.

    One or more of these free utilities will help
    you find out what is and is not present:

    DiskInventory X (free)
    Disk Inventory X

    or

    GrandPerspective (free)
    GrandPerspective

    or

    OmniDiskSweeper (free)
    OmniDiskSweeper, OmniWeb, and OmniPresence - The Omni Group
    Randy B. Singer
    Co-author of The Macintosh Bible (4th, 5th, and 6th editions)
    Mac OS X Routine Maintenance http://www.macattorney.com/ts.html

  15. #15
    Upgrading from El Capitan to Mojave - 25GB disappeared.
    pm-r's Avatar
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    Okay, so we still need to find what's different.

    I'm just wondering if any of the suggestions helped???




    - Patrick
    ======

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