Cannot Unlock HD from DU After iMac Unexpectedly Crashed

Discussion in 'OS X El Capitan (10.11)' started by 1z3, May 15, 2017.

  1. 1z3 macrumors newbie

    Joined:
    May 15, 2017
    #1
    Hello, I use my iMac probably for several hours every day and have not had any problems with lag or any other issues. Today, I was using my computer while making dinner. I came back from dinner and noticed the computer was turned off. When I turned on, it crashed from the Apple logo.

    The DU first aide fails when running. This leads me to believe the drive may be failing - which is weird to me considering everything was working very well. Not to mention that my iMac is about 3 years old, where as the mac I'm using now is from 2009 and use well over 6 hours every day :/

    Before buying a new drive and paying for the repairs, I want to try to perform a reinstall of the OS. When I try to perform an install of the OS I am told the hard drive is locked. When I try to unlock the hard drive in disk utility, the option to choose "Unlock" is greyed out and I cannot press it.

    Any suggestions? I won't have means to make a backup until Wednesday, so I don't want to do a formatting until then. If anyone has any advice, I would be grateful.
     
  2. simonsi macrumors 601

    simonsi

    Joined:
    Jan 3, 2014
    Location:
    Auckland
    #2
    That symptom can be the drive cable but only changing it will prove it.

    Daft IMHO to not have a backup, many failure types will be sudden and not give you the opportunity to take a backup after the problem occurs.
     
  3. 1z3 thread starter macrumors newbie

    Joined:
    May 15, 2017
    #3
    Aye. Lesson learned. I am hopeful that I will still be able to make a backup if I cannot repair via software. I can still view the directories and files through disk utility.
     
  4. simonsi macrumors 601

    simonsi

    Joined:
    Jan 3, 2014
    Location:
    Auckland
    #4
    Yes thats the symptom of the drive being put into read only. If you have DriveDX or similar you would probably see the CRC error count rising.
     

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