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  1. #1
    macOS installer cannot be loaded

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    macOS installer cannot be loaded
    All of a sudden, I could not start my computer and got an error message saying the macOS installer could not be loaded. I did a quick fix by holding the option key and pressing restart. Then I selected to start from my mac HD and it worked.

    I am using High Sierra 10.13.3 Did anyone know what has caused the problem and how can I fix it permanently?

  2. #2
    macOS installer cannot be loaded
    harryb2448's Avatar
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    Fingers crossed it keeps working as you may have a failing hard drive.

    Download SmartReporter which will advise on the hard drive health. Make sure you keep an up to date backup on an external drive.
    Last edited by harryb2448; 12-02-2019 at 10:30 PM.
    Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  3. #3
    macOS installer cannot be loaded
    pm-r's Avatar
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    I am using High Sierra 10.13.3 Did anyone know what has caused the problem and how can I fix it permanently?

    I don't know but I would suggest you go to your: System Preferences -> Startup Disk and select your normal boot disk.


    - Patrick
    ======

  4. #4
    macOS installer cannot be loaded

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    Patrick, I only got one hard drive but when I used the quick fix method, i.e., option-restart, it showed two hard drive, one default and the other macOS installer. I need to switch to the default one and restart which makes it work. Don't know what the macOS installer is which is now causing me the issue.

  5. #5
    macOS installer cannot be loaded
    MacInWin's Avatar
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    If you KNOW you don't need macOS installer, you may be able to get rid of it in Disk Utility. It sounds like a virtual drive that was created when you installed the OS at some point in the past and which somehow got set as the default boot drive by a glitch or by accident. So boot to the correct drive, invoke DU and see if the installer is in the side bar. You can then choose to unmount it if it is mounted and then delete it. If it is a partition of the main drive, you may have a bit more trouble getting rid of it, but at least you can do as Patrick suggests and set the Startup Disk to your "real" drive.
    Jake

  6. #6
    macOS installer cannot be loaded

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    My start up ask only has one drive there, i.e., mac HD. The macOS installer was never there and I did not have such problem before yesterday without me doing anything differently. when I got the error message, I was recommended to restart and with some research, I knew the quick fix of holding the Option key when clicking the restart button. At that point, I was given two drives, the real mac HD and the virtual macOS installer and the latter is the default drive to boot. I then switched it to the real HD and could successfully boot the computer. Don't know why the macOS installer came into the way all of a sudden and how to get rid of it.

  7. #7
    macOS installer cannot be loaded
    MacInWin's Avatar
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    Did you look in Disk Utility as I suggested in post #5? Any virtual drive should still show in DU. If you have to, you can boot into Recovery Mode and use DU there to look at the entire drive before any boot. I would be careful, however, as getting rid of the installer may involve mucking about with partitions and that could put your default boot drive at risk. Make a complete backup and test it before messing with DU in Recovery.
    Jake

  8. #8
    macOS installer cannot be loaded

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    How do I get to the Disk Utility if not the recovery mode?

  9. #9
    macOS installer cannot be loaded
    MacInWin's Avatar
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    Do you have a backup? Time Machine or clone? If you boot from a clone backup, you can use DU from there to look at the internal drive. If you have a TM backup you can try booting from it into a mode where DU is available. It won't look like normal at boot, but the functions of DU will be the same.


    Did you follow Patrick's suggestion in post #3 to make sure the right drive is set for boot?
    Jake

  10. #10
    macOS installer cannot be loaded
    IWT's Avatar
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    Quote Originally Posted by pettycash View Post
    How do I get to the Disk Utility if not the recovery mode?
    Open Finder > Applications > Utilities > Disk Utility

    NB I'm answering your specific question; not offering advice on how you use it, because wiser counsel than I have already discussed the options.

    Ian
    Ian

  11. #11
    macOS installer cannot be loaded

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    The Disk Utility just has the default mac HD, nothing like macOS installer.

  12. #12
    macOS installer cannot be loaded

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    I guess the issue arose when I started to install the mac os from high sierra to Mojave and Catalina. then, I realized that Office 2011 would stop to work; thus, I stopped those installation. All of a sudden, the problem mentioned earlier arose. Now, the question is how I can remove the partial installation and revert it back to High Sierra?

  13. #13
    macOS installer cannot be loaded
    MacInWin's Avatar
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    Again, did you follow Patrick's suggestion in post #3 to make sure the right drive is set for boot?
    Jake

  14. #14
    macOS installer cannot be loaded
    pm-r's Avatar
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    Quote Originally Posted by MacInWin View Post
    Again, did you follow Patrick's suggestion in post #3 to make sure the right drive is set for boot?

    Say Jake, I'm curious if you'll end up posting the same question for a third time???



    - Patrick
    ======

  15. #15
    macOS installer cannot be loaded
    MacInWin's Avatar
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    Nah, Patrick, if it doesn't get answered I'll just move on. The interrupted upgrade has changed the default boot drive, I think, and until we know what it says and that he's looked at it there just aren't any suggestions to make.
    Jake

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