Disk Locked; cannot Re-install Osx

Discussion in 'macOS Sierra (10.12)' started by GLRico, Jun 7, 2017.

  1. GLRico macrumors newbie

    Jun 7, 2017
    Had a strange issue with my Mac where the password box was not popping up and I couldn't log-in. I think it is 2014 model btw. So I tried to delete the HD and reinstall. I think I also have restored the 1.51 Gb OSX base system back on and it no longer appears as an external disk. It also does not let me delete the HD in disk utility now and only gives me the first aid option not grayed out which quickly reports no issues.

    Real Problem:
    When trying to reinstall the HD is grayed out and it says "this HD is locked" preventing me from reinstalling.

    I found some posts and tried to apply what I read; when I use the terminal and command: diskutil cs list
    It replies with : no CoreStorage Logical groups found

    When I use command: diskutil list
    Reply is:
    /dev/disk0 (internal, physics):
    #: Type Name Size Identifier
    0: GUID_partition 251.0Gb disk0
    1: EFI EFI 209.7Mb disk0s1
    2: Apple_HFS OS X Base System 250.1Gb disk0s2

    /dev/disk1 (disk image):
    #: Type Name Size Identifier
    1: untitled. +5.2Mb Disk1

    It goes on for another 15 disk to 16 all maker identical to disk1.

    Also I cannot boot the Mac; it goes straight to recovery options and if I try starting it with r+CDM held it actually does nothing it seems. Any help would be very very greatly appreciated please.
  2. keysofanxiety macrumors G3


    Nov 23, 2011
    If you try right-click the volume in Disk Utility and select Unlock, then enter your password, does this now allow you to install macOS? Hopefully it's as simple as that. :)

    If so: unlock the disk, format, then install macOS.
  3. GLRico thread starter macrumors newbie

    Jun 7, 2017
    In disk utility it is not letting me bring up any kind of menu by click on the drives.

    Most of the options other than first aid at the top are grayed out. In disk utility what it shows me is:

    APPLE SSD SM0256G Media (251Gb PCI Internal Physical Disk)
    OS X Bass System (250.14Gb PCI Internal Volune Mac OS Extended)
  4. keysofanxiety macrumors G3


    Nov 23, 2011
    Please could you kindly supply a photograph/screenshot of what you see in Disk Utility? Sorry for the inconvenience, just need to be sure what you're seeing and hopefully we'll figure it out. :)
  5. GLRico thread starter macrumors newbie

    Jun 7, 2017

    I'd like to but when I try uploading a pic from my iPhone it says it is too large. I don't have any URL links or know how to go about that. Is there any information I can look for specifically?
  6. keysofanxiety macrumors G3


    Nov 23, 2011
    Ah no problem. I should've suggested a few other things anyway.

    Please could you hold CMD + ALT/Option + R on startup. This will boot into Internet Recovery. Can you format the Apple SSD in Disk Utility? Not the Macintosh HD volume but the actual listed "Apple SSD"?

    If so, after formatting, can you close Disk Utility & reinstall OS X?
  7. GLRico thread starter macrumors newbie

    Jun 7, 2017
    Ok wait think I got it [​IMG]

    --- Post Merged, Jun 7, 2017 ---
    It actually starts up into that mode automatically now; when I try doing it with cmd+r it doesn't work and will never do anything.

    When I go to APPLE SSD in Disk Utility it only gives me the options to run first aid or partition. Erase, store, and mount are all grayed out. I don't see anything about formatting and can't bring up any menus by clicking on anything.
  8. keysofanxiety macrumors G3


    Nov 23, 2011
    Just to confirm, you're:

    1) Holding CMD + ALT + R on startup (the Alt is very important, as CMD + R will boot into normal recovery)
    2) You're selecting the top partition (red) and when you do, the Erase/Partition option is still greyed out?

    Screen Shot 2017-06-07 at 23.33.52.png
  9. GLRico thread starter macrumors newbie

    Jun 7, 2017
  10. keysofanxiety macrumors G3


    Nov 23, 2011
    Oh okay! I'm not sure why it won't boot into internet recovery. Please can you select Partition and see if you can create a new volume that way?
  11. GLRico thread starter macrumors newbie

    Jun 7, 2017

    Sorry for the confusion but internet recovery does seem to have started; just was much slower. Do I still select partition even with erase and restore options now available?

    As for the partition; if I'm to make one what format do I want it in?
  12. keysofanxiety macrumors G3


    Nov 23, 2011
    Ah that's looking better! Just select Erase and ensure the format is Mac OS Extended (Journaled) in GUID. That should be the default setting anyway.

    Once it's formatted it'll be able to reinstall macOS from there.
  13. GLRico thread starter macrumors newbie

    Jun 7, 2017
  14. apicard macrumors newbie

    Jul 30, 2017
    Any way to do this without Internet Recovery? I have a similar problem but am using an old 2009 iMac. My primary boot disk somehow was restored as the OS X Base System and now I can’t boot past recovery mode. I need to wipe everything and reinstall MacOS High Sierra. Thanks.
  15. Ramkrish macrumors newbie

    Jan 26, 2018
    --- Post Merged, Jan 26, 2018 ---
    I read ur full conversation,i also have same proble of my macbook...plsss guid me how to solve this prblm.
  16. Nelebelle macrumors newbie


    Jan 29, 2018
  17. Nikko123 macrumors newbie


    Apr 17, 2018
    Please help me, I think my Mac doesn't have features of INTERNET RECOVERY what should I do?
  18. careye macrumors newbie

    Jun 9, 2018
    Hi - It's been a while since you've posted this - hope you figured it out ok. If not, here's what I learned - I had the very same problem including the drive information shown in pictures from others.

    You have to be hardwired, NOT wifi, when you reinstall the OS from the internet. I'm quite novice but what I think happens is that the wifi connection (or ability to connect via wifi) comes later in the boot sequence. I hardwired my machine and was able to go from there. The part with the spinning globe went from about 12 minutes to about 3, I then had to partition the hard drive (journaling enabled as it will tell you when you first try to load the OS - so you may have to back track to the disk utility), then the reinstall OS works slick as can be. I'm not quite done yet but the hard drive was available where it wasn't before and it's now counting down on the installation.

    MOST of the instructions on the Apple site for this were great and very helpful, but they never mentioned being connected through cable to the internet. Seems a critical piece of information missing.

    Good luck!

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