Installed SSD, can’t delete old HDD completely

Discussion in 'macOS High Sierra (10.13)' started by BugeyeSTI, Jun 12, 2018.

  1. BugeyeSTI macrumors 68020

    BugeyeSTI

    Joined:
    Aug 19, 2017
    Location:
    Arizona
    #1
    I just installed a SSD in my iMac and am going to use the old internal HDD as a storage volume. When I erased the HDD after installing High Sierra, it still shows the original recovery partition (650mb) and EFI(210mb). How do you completely wipe the drive of everything? I’ve tried to erase in recovery mode and it still won’t work. Any ideas would be greatly appreciated
     
  2. Tech198 macrumors G5

    Joined:
    Mar 21, 2011
    Location:
    Australia, Perth
    #2
    open Terminal on Mac and type: diskutil list

    to get "Drive ID" Look for the capacity of your disk... The ID would be something like : /dev/disk2 for example

    Then type : diskutil zerodisk /dev/<Drive ID you saw>.

    This will do a full secure erase of the disk, and can be re-partitioned via Disk Utility.

    For example, mine is.
     

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  3. BugeyeSTI thread starter macrumors 68020

    BugeyeSTI

    Joined:
    Aug 19, 2017
    Location:
    Arizona

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