Zap PRAM in Terminal - iMac

Discussion in 'iMac' started by Rocketfish, Aug 13, 2019.

  1. Rocketfish macrumors newbie

    Rocketfish

    Joined:
    May 8, 2018
    Location:
    Canada
    #1
    I don't have a wired keyboard to enter the traditional Zap PRAM keystrokes. Has anyone used the sudo command "nvram -c" to accomplish this?
     
  2. mikeboss macrumors 65816

    mikeboss

    Joined:
    Aug 13, 2009
    Location:
    switzerland
    #2
    yup, using this command all the time. check content of NVRAM with "nvram -xp" before and after "nvram -c".
     
  3. Rocketfish thread starter macrumors newbie

    Rocketfish

    Joined:
    May 8, 2018
    Location:
    Canada
    #3
    Thanks, mikeboss. Cover me. I'm goin' in...
     
  4. mikehalloran macrumors 68000

    Joined:
    Oct 14, 2018
    Location:
    The Sillie Con Valley
    #4
    Why?

    Zapping the NV RAM is to reset the defaults. It doesn't matter what that shows.
     
  5. mikeboss macrumors 65816

    mikeboss

    Joined:
    Aug 13, 2009
    Location:
    switzerland
    #5
    it's a habit...

    1. nvram -xp (so I can see the data)
    2. nvram -c (clear NVRAM)
    3. nvram -xp (to check if NVRAM is empty)
     
  6. mikehalloran macrumors 68000

    Joined:
    Oct 14, 2018
    Location:
    The Sillie Con Valley
    #6
    Ok, we all have our habits.

    Has it ever once shown the NV RAM wasn't cleared? Just kidding—we both know the answer.
     
  7. Rocketfish thread starter macrumors newbie

    Rocketfish

    Joined:
    May 8, 2018
    Location:
    Canada
    #7
    I'm with mikeboss on this one. Like to know what existed before NVRAM cleared.
     

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6 August 13, 2019