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hard drive locked

I'm trying to reinstall the OS on a MacBook after erasing the drive and when the system ask where to reinstall the hard drive is ghosted and when I click it it says is locked. How I can unlock the drive?

MacBook, macOS Sierra (10.12.6)

Posted on Aug 6, 2018 7:54 PM

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Question marked as Best reply

Posted on Aug 6, 2018 11:00 PM

Drive Partition and Format - El Capitan or Later


  1. Restart the computer with the COMMAND-R keys held down. Release them when you see the Apple logo and progress bar.
  2. In a short while, the Utility Menu should appear on a darkish gray screen.
  3. Select Disk Utility and click on the Continue button.
  4. After Disk Utility loads select the drive (out-dented, top entry with the mfgr.'s ID and size) from the side list.
  5. Click on the Erase tab in the Disk Utility toolbar. A panel should drop down.
  6. In the drop down panel set the partition scheme to GUID. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  7. Click on the Apply button and click on the Done button when it is activated.
  8. Quit Disk Utility and return to the Utility Menu.
  9. Select Install OS X and click on the Continue button.


This will install the version of OS X you had installed.

1 reply
Question marked as Best reply

Aug 6, 2018 11:00 PM in response to enriquerrs

Drive Partition and Format - El Capitan or Later


  1. Restart the computer with the COMMAND-R keys held down. Release them when you see the Apple logo and progress bar.
  2. In a short while, the Utility Menu should appear on a darkish gray screen.
  3. Select Disk Utility and click on the Continue button.
  4. After Disk Utility loads select the drive (out-dented, top entry with the mfgr.'s ID and size) from the side list.
  5. Click on the Erase tab in the Disk Utility toolbar. A panel should drop down.
  6. In the drop down panel set the partition scheme to GUID. Set the Format type to APFS (SSDs only) or Mac OS Extended (Journaled.)
  7. Click on the Apply button and click on the Done button when it is activated.
  8. Quit Disk Utility and return to the Utility Menu.
  9. Select Install OS X and click on the Continue button.


This will install the version of OS X you had installed.

hard drive locked

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