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  1. #1
    Mac Mini messed up update
    Hi,

    I'm not a Mac expert I usually deal with Windows but trying to fix this for my friend

    He has this Mac Mini server - https://everymac.com/systems/apple/m...ver-specs.html
    Its not being used as a server just as home PC

    It did a OS update but now displays this error
    1a.jpg

    I have done Command & R and gone into disk utility and ran first aid, it says both hard drives are OK
    What is the extra 2GB drive? something to do with the update?
    2a.jpg

    Then I went back and to reinstall macos and eventually get to this screen
    Why is 1 hard drive greyed out? Is that the drive where MacOS is currently installed?
    3a.jpg

    Thanks

  2. #2
    Mac Mini messed up update
    MacInWin's Avatar
    Member Since
    Jan 01, 2009
    Location
    Winchester, VA
    Posts
    5,234
    Your Mac's Specs
    MBP 15" Mid 2015, iPhone XS, an iMac, plus ATVs, AWatch, MacMini
    It looks like the drive is unformatted or formatted incorrectly. I also see that the drive is pretty much empty, which means the owner doesn't have anything on it. If that latter is correct, the best way to proceed is to boot using CMD + R and then use Disk Utility to format the drive for Mac OS Extended (Journaled) and then install the OS again. Make it all one partition. Since the screen shows Sierra, I'll assume that's what it came with, which should be available from an internet install. Once that is done, you can, if he wants, upgrade to High Sierra, which is the most recent version it supports.
    Jake

  3. #3
    Mac Mini messed up update
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, US
    Posts
    5,635
    Your Mac's Specs
    L2014 Mac mini macOS Mojave, iPhone 8+ iOS 12, 12.9" iPad Pro 1 iOS 12, Pencil 1
    The way I see it, the mini came with 2 internal 500GB drives. The original OS drive, looks like it has died. If so, it can be replaced, or you can just use the 2nd internal drive as the new OS boot drive. See here for the repair guide to replace the drive, https://www.ifixit.com/Device/Mac_Mini_Mid_2011

    Does your friend have a backup?

    To answer your questions:

    "What is the extra 2GB drive? something to do with the update?" The 2GB is the Recovery partition, which is on the original OS drive. Nothing to do with the update. Mac OS X/OS X/macOS, since Mac OS X Lion (10.7) creates a Recovery partition on the drive. Since that is part of the 500GB startup drive and that part of it is still functioning, I don't know if the data on the OS part of the drive is recoverable.

    "
    Why is 1 hard drive greyed out? Is that the drive where MacOS is currently installed). " Same as above, the Recovery partition appears as Mac OS X/OS X/macOS "Base System" when booted from that partition (or bootable USB installer).
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  4. #4
    Mac Mini messed up update
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Keller, Texas
    Posts
    57,027
    Your Mac's Specs
    2017 27" iMac, 10.5" iPad Pro, iPhone 6s+, iPhone 7+, Numerous iPods, Mojave
    Bob is correct. The Mac Mini Server did come with two identical hard drives even though the owner is not using the Mini as a server. Follow Jake's advice in post # 2.

  5. #5
    Mac Mini messed up update
    ferrarr's Avatar
    Member Since
    May 21, 2012
    Location
    Pawtucket, RI, US
    Posts
    5,635
    Your Mac's Specs
    L2014 Mac mini macOS Mojave, iPhone 8+ iOS 12, 12.9" iPad Pro 1 iOS 12, Pencil 1
    I wonder if they went from macOS Sierra (10.12) to macOS Mojave (10.14) and the APFS conversions messed something up?
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  6. #6
    Mac Mini messed up update
    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    25,058
    Your Mac's Specs
    iMac, i7 4GHz, 32GB memory, 1TB Blade, OS X.14.2 Mojave,
    And that model Mini Server will not install Mojave. Like all 2011 models limited to High Sierra. Like the Song about KC. 'They have gone about as far as they can go'!

    P.S. That does NOT apply to the KC Chiefs!!!!!
    Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  7. #7
    Thanks for all the info

    I dont think he has a backup and he doesnt really know what he had saved where on there either, he isnt very computer literate

    Am I correct in saying the OSX Base System hard drive is the one where the OS was originally installed? If so how can it think only 2GB is used, that 2GB is probably the recovery partition. Is it possible that whatever messed up has caused it to think there is less free space on the drive than there really is?

    I've been looking in Disk utility and
    OS X base system is Mac OS extended with 1.28GB used
    HD2 is Mac OS extended (Journaled) with 1.08GB used

    Does it have to be Mac OS extended (Journaled) for me to be able to install OSX to it?



    Thanks
    Last edited by slippyjim; 12-19-2018 at 07:22 AM.

  8. #8
    OK update.

    He said there was nothing that needed saving so I formatted the OS X base system as Mac OS extended (Journaled) and it started installing OS X Sierra, then after a few minutes it just turned itself off. I tried again and it failed with this error
    Attachment 28970

    then this
    Attachment 28971

    So I formatted the other HDD and tried that, that does a similar thing although now I also get this, or something similar appear as well
    Attachment 28972

    I wondered if it was faulty RAM so i changed it and now when I go into Command & R and reinstall OS X it was going to install El Capitan..... then it wanted me to sign into app store so I used my sign in and it said that ID is only valid with the UK store so it was going to swap but it went back to the previous screen so I signed in again and now it just says "this item is temporarily unavailable. Please try again later"

    So now I turned it off and did Command & R again and it is back to installing OS Sierra again now

    Can I download an iso file and install from USB?


    Any ideas?

    Thanks
    Last edited by slippyjim; 12-19-2018 at 08:48 AM.

  9. #9
    Well I tried again and it has now worked.

    I've now got it running a bad sector scan with stellar drive toolbox

  10. #10
    The original OS X HDD has 1 bad sector, the other HDD is fine. seems strange that just 1 bad sector would cause that much trouble.
    Also, a few times I have left the Mac doing some scan and come back an hour or 2 later and its off, not gone to sleep its totally turned off so looks like there is some kind of power issue.
    I was running a RAM test after doing Command D on startup and came back later and it was off. Also now I cant get back into the diagnostics using Command D, I press it after the chime, Internet recovery appears then throws up error "-6002D" and goes no further, i cant find any info on this error after searching.

    I have successfully updated it to High Sierra now

    Any ideas on these latest strange things......?

    Thanks

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