Does Disk Utility repair work best in Safe Mode?

Discussion in 'macOS' started by komatsu, Nov 4, 2016.

  1. komatsu macrumors 6502

    Joined:
    Sep 19, 2010
    #1
    Is Disk Utility most effective when the OS is in Safe Mode?
     
  2. KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #2
    No, once booted, there is no difference for Disk Utility. Safe mode does perform a disk repair while booting, but it does not use Disk Utility for this, strictly speaking.

    Why are you asking?
     
  3. hobowankenobi macrumors 6502

    Joined:
    Aug 27, 2015
    Location:
    on the land line mr. smith.
    #3
    Disk Utility is most effective when used on a disk you are not booted to. If you need run it on your boot drive, and don't have a secondary boot drive, booting to Recovery Mode and running DU will get the job done.
     
  4. komatsu thread starter macrumors 6502

    Joined:
    Sep 19, 2010
    #4
    Some writer in Mac Life recommended Disk Utility be run in Safe Mode.

    But obviously, as Hobo has recommended, running it from a secondary boot drive is optimal.

    BTW, does the secondary boot drive have to have the exact same OS as the target OS?
     

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