Mac not booting up properly

Discussion in 'Mac Basics and Help' started by doylw, Feb 13, 2019.

  1. doylw macrumors newbie

    Joined:
    Feb 13, 2019
    #1
    Hello,



    I wonder if any of you can help. I'm having issues with my mac in the when it boots up it gets half way through the loading before failing and turning off again.



    I have followed the instructions suggested by apple.



    I have tried going into disk utitlity and selecting first aid but it fails on my hard drive. I've tried to reinstall my OS but my hard drive is locked.



    It appears that my only option is to reformat my hard drive but it's not backed up. Is there anything I can do to save it??



    Thanks in advance
     
  2. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #2
    You need to tell us WHICH Mac you have, and WHAT YEAR it was made.
     
  3. Mac4Brains macrumors regular

    Mac4Brains

    Joined:
    Oct 18, 2005
    #3
    stop messing with it and back it up. the system sees that there is a major issue and locked the drive to protect the data. after you back it up format the drive using the secure security format. install the system and play with it for a while to make sure that it is not a total drive failure. if it appears happy after that then bring in the data from the backup. but keep the backup around incase this happens again.
     
  4. hobowankenobi macrumors 6502a

    Joined:
    Aug 27, 2015
    Location:
    on the land line mr. smith.
    #4
    There is a very real possibility your drive is failing, or has failed.

    As mentioned, be sure your data is backed up first, and then format the drive....and test it. If it is failing, a reinstall of the OS could result in errors, failure, or never completing (hanging).
     
  5. doylw thread starter macrumors newbie

    Joined:
    Feb 13, 2019
    #5
    It's a 2013 iMac and the OS is OS X El Capitan
    --- Post Merged, Feb 13, 2019 ---
    The issue is that I can access disk utilities but I can't seem to start it in safe mode. So I can't back anything up at the moment, it seems to me the only thing I can do is format the drive but I don't want to lose the data on my hard drive.
     
  6. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #6
    OP wrote:
    "It's a 2013 iMac and the OS is OS X El Capitan"

    Does it have a fusion drive inside?
    If so, is it a 3tb fusion drive?

    These have a record of failure due to the 3tb platter-based drive.

    OP also wrote:
    "The issue is that I can access disk utilities but I can't seem to start it in safe mode. So I can't back anything up at the moment, it seems to me the only thing I can do is format the drive but I don't want to lose the data on my hard drive."

    Be aware that if you have a fusion drive and "part of it" (usually the platter-based hard drive) has suffered a mechanical failure, you're probably not going to get that data back anyway.
    This is what "backups" are for.

    Can you try this RIGHT NOW:
    a. Power down, all the way off
    b. Press the power on button
    c. Hold down "command-option-R" and keep holding it down until the internet symbol appears. You may need to enter your wifi password.
    d. This should get you to internet recovery.
    e. Open Disk Utility and try the "repair disk" function on the internal drive
    f. What results do you get?
     
  7. doylw thread starter macrumors newbie

    Joined:
    Feb 13, 2019
    #7

    Thanks for your reply, I've tried this a couple of times already and each time it fails to complete the first aid/repair disk.

    Also, earlier today I ran a diagnostic and it couldnt find any issues with the machine.
     
  8. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #8
    "I've tried this a couple of times already and each time it fails to complete the first aid/repair disk."

    Sounds like a failed internal drive.
    My suggestion at this point:

    Get an EXTERNAL USB drive, and try to install a copy of the OS onto that (instead of fooling with the internal drive).

    You need a way to get the Mac booted, and it will boot and run just as well from an external drive as from an internal one.

    I'm going to -guess- that you have a failed internal drive.
    Again -- WHAT KIND of drive is inside?
    This is IMPORTANT information to let us know about.

    I think the reality you face is:
    - a failed internal drive
    - data that probably won't be recoverable (unless you have a backup)

    The "best way forward" at this point may be
    - get an EXTERNAL USB3 SSD, and set that up to be "the NEW boot drive".
    - perhaps when you get up and running that way, you -might- be able to "get at" the internal drive and get your data off of it (but I still consider this to be "a slim chance", at best).

    Do you have an external USB drive right now?
    Do you happen to have a USB flashdrive that is 32gb or larger around, right now?
     
  9. Mac4Brains macrumors regular

    Mac4Brains

    Joined:
    Oct 18, 2005
    #9
     
  10. wilson109 macrumors newbie

    wilson109

    Joined:
    Jan 16, 2019
    Location:
    Dallas
    #10
    Try swapping out the charger or power cable, or using a different power outlet. The charger itself may be damaged.
     
  11. davegoody macrumors 6502

    davegoody

    Joined:
    Apr 9, 2003
    Location:
    Reading, Berkshire, England
    #11
    It’s an iMac, so thee is no charger, it’s a desktop....... this is not related to an issue with power, the hard drive is faulty......
     

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