1. gera101's Avatar
    Help. Mac mini (2014 on big sur) freezes when trying to login, crashes and shuts down. Trying to do a clean install can’t see my hard drive can only see macOS base system. Already tired Option, Command, P, and R to reset ram. Anyone any ideas what’s going on?? Waiting on new MBP to upgrade
    04-10-2021 05:06 PM
  2. gera101's Avatar
    Running macOS 11.2.3(20D91) ran first aid no luck. Can’t erase or format
    04-10-2021 05:10 PM
  3. Ed7789's Avatar
    Hi and welcome to iMore.

    From what I understand, you're in macOS Recovery and you chose Disk Utility.

    By default, Disk Utility only shows volumes (e.g.: the container where macOS is installed on, which is a subdivision of the drive) and hides devices like your drive.

    If you click on the View button at the top, and choose Show All Devices you should see the drive appear in the left sidebar. From there, you should be able to select and erase the drive (losing any remaining information on it).
    Last edited by Ed7789; 12-03-2021 at 12:18 PM. Reason: Removed broken link
    Just_Me_D likes this.
    04-10-2021 10:37 PM
  4. gera101's Avatar
    Thanks for the advice. Did it, nothing came up. So I pressed Shift-Option-Command-R to start up from macOS Recovery over the Internet. That seemed to work as of now. Was able to erase. Now trying to find to the hard drive to install macOS since I now have the folder with ?
    04-11-2021 01:24 PM
  5. gera101's Avatar
    Just reconfirming. yeah I did what you mentioned in the picture. The hard drive still doesn’t appear. Just says Apple disk image media (3.22gb) and macOS base system (2.88gb)
    04-11-2021 02:31 PM
  6. Ed7789's Avatar
    To be certain, can you send a picture of what you're seeing in Disk Utility?

    I wish Apple still bundled their System Information utility with macOS Recovery, it would be very helpful right now.
    04-11-2021 05:41 PM
  7. gera101's Avatar
    This “Disk 1 selected” portion
    Attached Thumbnails Big Sur clean install can only see macOS base system-6107e3b4-6332-4236-905b-a324ed8e0728.jpg  
    04-14-2021 11:20 AM
  8. Ed7789's Avatar
    So that’s not a Big Sur recovery image, it’s much older. (Which helps me)

    This said, it does not seem to see the drive.

    Can you see if you have access to “System Information” or “System Profiler” in the main “Utilities” menu.

    If so, open it and select SATA in the left sidebar. We should see the drive show up there.
    04-14-2021 06:18 PM
  9. gera101's Avatar
    Yes indeed I went back from Big Sur to Yosemite to make it “easier”. No lucky on finding the hard drive still, and can’t click system information under utilities as you mentioned or to login into my Mac (As seen in picture, grayed out not clickable).(never changed anything hardware wise on this Mac, just one morning couldn’t login) Any other ideas??
    Attached Thumbnails Big Sur clean install can only see macOS base system-d5d5b9cc-70bc-411a-a332-3faea1c60e7b.jpg  
    04-14-2021 07:09 PM
  10. Ed7789's Avatar
    It's greyed out because you're in Disk Utility.

    However, I have different approach that might be easier

    Restart your computer, and before the power-on chime sounds start pressing "D". Keep pressing it until the screen either turns blue, or you have a "Checking your Mac" message.
    That's Apple's diagnostic tool. It should pick up any issues with the original hardware.
    Just_Me_D and scruffypig like this.
    04-14-2021 07:40 PM
  11. gera101's Avatar
    Cool meant not clickable (not gray). Pressed D says “No issues found Reference Code: ADP000”. So basically means any problems are possibly Software related then. Lol
    04-14-2021 09:30 PM
  12. Ed7789's Avatar
    Okay, let's do one last thing. I'm running out of ideas.

    Start the macOS Yosemite recovery disk, go into the "Utilities" menu and choose "Terminal". Do not run Disk Utility. Please provide pictures of those, to see what we have found

    Once you are in the terminal, run the following commands (type and press Enter):
    system_profiler SPSerialATADataType

    This one will list all the hard drives your computer has. It should result in a similar output to this (note, I had to run a command more aligned with my computer which has an NVMe Drive):


    diskutil list

    This one will list all volumes, with no filtering, that your system has found.

    The output will be similar to this:
    Last edited by Ed7789; 04-15-2021 at 07:04 PM.
    04-15-2021 06:48 PM
  13. gera101's Avatar
    (Thanks got busy this week)
    Just reporting back my results
    Attached Thumbnails Big Sur clean install can only see macOS base system-7f3ddbdf-0ad2-4134-b4de-ca05036eaa7e.jpg  
    04-24-2021 11:29 AM
  14. gera101's Avatar
    diskutil list
    Attached Thumbnails Big Sur clean install can only see macOS base system-image.jpg  
    04-24-2021 11:34 AM
  15. Ed7789's Avatar
    (Thanks got busy this week)
    Just reporting back my results
    No worries for the delay.

    Do you see anything underneath the “Intel 8 Series Chipset” entry, similar to how you have “Unknown” under “Apple SSD Controller”?
    Last edited by Ed7789; 04-24-2021 at 07:52 PM.
    04-24-2021 06:38 PM
  16. gera101's Avatar
    Under intel 8 series chipset
    Attached Thumbnails Big Sur clean install can only see macOS base system-8a8414ee-08aa-4b7a-a5fb-6bc0613d5732.jpg  
    05-09-2021 12:20 PM
  17. Ed7789's Avatar
    So, in the two pictures of system_profiler, I don’t see a hard drive.

    I’m suspecting it could be the “Unknown” device.

    It could very well be that your drive stopped functioning (aka died).
    05-09-2021 01:09 PM
  18. gera101's Avatar
    Thanks for the help, ima wait to see what Apple releases this 2021 summer/fall (meanwhile will use a surface and borrow an older Mac) anything I should do to disassociate my apple id from this Mac mini?? (Since drive died)
    05-09-2021 07:55 PM
  19. Ed7789's Avatar
    Of course, since the drive no longer works, it is difficult to retrieve or modify data on it. A very determined person might be able to, but you need highly specialized tools, and even then, it would be a stretch.

    On Apple’s servers, you might want to mark it for erasing it from your account on https://iCloud.com, just in case.
    Choose “Find iPhone”, the click the “All Devices” at the top and select the MacMini. Then, you should have a “Erase Mac” choice.
    05-10-2021 07:05 PM

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