Please help! Locked HD after erasing

Discussion in 'MacBook' started by Fordornothing, Jun 22, 2017.

  1. Fordornothing macrumors newbie

    Fordornothing

    Joined:
    Jun 22, 2017
    #1
    Hi, I'm lost, I wanted to reset my MacBook Pro retina back to factory reset. However, when I erased the startup disk I did not back up anything because I did not have anything valuble to save. Now, when I try to reinstall macOS Sierra I am unable to select the "OS X Base System" HD. It's says "this disk is locked," and I'm unable to install it. Is there anything that I can do to fix this issue?
     
  2. keysofanxiety macrumors 604

    keysofanxiety

    Joined:
    Nov 23, 2011
    #2
    OS X base system is the recovery OS bit IIRC. Basically sounds like you need to create a new volume in Disk Utility for the OS to install to as you won't be able to install onto that.

    Go into Disk Utility and you should see an indented partition under your SSD which is about the size of your total drive. If you don't see anything there you'll need to create a new partition.
     
  3. Fordornothing thread starter macrumors newbie

    Fordornothing

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    Jun 22, 2017
  4. iamsen47 macrumors regular

    Joined:
    Aug 18, 2012
    Location:
    Kobe, Japan
    #4
    Try clicking the APPLE SSD SM01.. , I reformatted my Mini recently and I think that's where I had to select because I could do any kind of partitioning. To put it simply, the SSD is the base container, while the OS X Base System is just a partition. I think.
     
  5. Fordornothing thread starter macrumors newbie

    Fordornothing

    Joined:
    Jun 22, 2017
    #5
    IMG_1205.JPG Ok. When I click the Apple SSD everything is greyed out. I'm only able to select first aid, partition, and info.
     
  6. Lucky736 macrumors 6502a

    Lucky736

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    Jan 18, 2004
    Location:
    US
    #6
    Try Partition and see if it will create a new partition for you.
     
  7. Fordornothing, Jun 23, 2017
    Last edited: Jun 23, 2017

    Fordornothing thread starter macrumors newbie

    Fordornothing

    Joined:
    Jun 22, 2017
    #7
    IMG_1207.JPG I tried to make a new partition but it does not allow me to do so.
     
  8. Weaselboy Moderator

    Weaselboy

    Staff Member

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    Jan 23, 2005
    Location:
    California
    #8
    I think the issue there is you have done a command-r boot to the local disk based recovery, and you cannot format the drive since you are still booted to it.

    Reboot and hold command-option-r to get to Internet recovery. After selecting your wifi you will see a spinning globe while the recovery utility downloads. Then you will see the recovery screen. Now use Disk Util to erase the drive by selected where is says Apple SSD at the top there then erasing.
     
  9. Fordornothing thread starter macrumors newbie

    Fordornothing

    Joined:
    Jun 22, 2017
    #9
    Ok, after I restarted my mac using the command-option-r I recieived a message apple.com/support with an error code "-2002F"
     
  10. Weaselboy Moderator

    Weaselboy

    Staff Member

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    Location:
    California
    #10
    That is usually because you are one a type of wifi setup not supported by Internet recovery. Can you just open up the wifi network with no password or anything to get this done?
     
  11. Fordornothing thread starter macrumors newbie

    Fordornothing

    Joined:
    Jun 22, 2017
    #11
    That's going to be a problem because

    I'm in a furnished apartment in Colombia and the wifi came already set up. I tried to ask the owner about this before to unlock it but he will not authorize me to do so. It's difficult to persuade him to do so because I don't speak Spanish very well and he doesn't really understand me. Is there no other solution to this problem without a specific wifi setup?
     
  12. Weaselboy Moderator

    Weaselboy

    Staff Member

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    Jan 23, 2005
    Location:
    California
    #12
    No sorry. You are going to need to get on wifi that is supported by Internet recovery. WPA (most common) is supported. WPA enterprise and WEP are not supported. I doubt an apartment has WPA enterprise, so they may be on the older and less secure WEP. If that is the case, maybe you can sweet talk them into setting it to WPA by explaining it is better and more secure?
     
  13. Fordornothing thread starter macrumors newbie

    Fordornothing

    Joined:
    Jun 22, 2017
    #13
    ok. Thanks for the help. I will give it a try. If not I will try to find an Apple Store here and see if they can help me out.
     
  14. jamobruh macrumors newbie

    Joined:
    Oct 4, 2017
    #14
    please help locked hd macintosh hd is not a valid core storage when tryng to bypass
     
  15. Weaselboy Moderator

    Weaselboy

    Staff Member

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    Jan 23, 2005
    Location:
    California
    #15
    Can you tell us a little more? What model and year Mac are you on and what happened that made you want to erase the drive.
     

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