Receiving error messages after formatting drives?

Discussion in 'macOS Sierra (10.12)' started by stanw, Apr 4, 2018.

  1. stanw macrumors 6502a

    Aug 29, 2007
    I have formatted several drives recently with Sierra as Mac OS Extended Journaled Encrypted and each item I receive an error, and after reformatting a second time it works. Any idea why this is happening? So far, it has happened with four separate drives.

  2. BrianBaughn macrumors 603


    Feb 13, 2011
    Baltimore, Maryland
    I've had issues like that just trying to format unencrypted. Second attempt usually works. Seems like Disk Utility has trouble unmounting the drive...but I don't know.'s not just you.

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