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Thread: macOS Update and External Drives

  1. #1

    ProTruckDriver's Avatar
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    macOS Update and External Drives
    When the Mac has Operating System Updates like we just had from 10.13.5 to 10.13.6 and after you backed up before installing the new update. Is it best before installing the new update to disconnect external drives (Time Machine / SuperDuper) until after the update is installed? Does it make a difference?

    The way I have been doing System Updates:
    1. Make sure I have the latest Time Machine Update.
    2. Backup and Clone with SuperDuper.
    3. Disconnect Time Machine & SuperDuper
    4. Reboot
    5. Download update and install
    6. Connect Time Machine & SuperDuper.
    iMac Clone and Backup with SuperDuper, Time Machine & iCloud
    "The world is full of nice people…… If you can’t find one, be one."

  2. #2


    Member Since
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    It shouldn't matter, but if it let's you feel safer, you could disconnect the drives. I usually always have my TM drive connected, and another drive that has the there previous OS versions.
    -- Bob --
    Please backup. Everything has a life cycle, unexpected and warning free. Nothing will last as long as you want it to.

  3. #3

    ProTruckDriver's Avatar
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    Thank you Bob.
    iMac Clone and Backup with SuperDuper, Time Machine & iCloud
    "The world is full of nice people…… If you can’t find one, be one."

  4. #4

    MacInWin's Avatar
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    I have never bothered to disconnect any attached drives when upgrading like that. And like Bob, I've never seen any issues with it.
    Jake

  5. #5

    pine man's Avatar
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    TM external drive and CCC external drive both left connected during yesterdays update with no ill effects.

  6. #6

    pm-r's Avatar
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    Is it best before installing the new update to disconnect external drives (Time Machine / SuperDuper) until after the update is installed? Does it make a difference?

    I would suggest doing so and at one point many years ago, Apple even suggested it and not that too long ago it became a requirement for many to disconnect all extra drives and peripherals to save data corruption with the update and install.




    - Patrick
    ======

  7. #7

    ProTruckDriver's Avatar
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    Quote Originally Posted by pm-r View Post
    I would suggest doing so and at one point many years ago, Apple even suggested it and not that too long ago it became a requirement for many to disconnect all extra drives and peripherals to save data corruption with the update and install.
    That's what I was thinking Patrick about the data corruption with the update and install. I guess I'll play it safe and keep disconnecting the extra drives before the update and install.
    iMac Clone and Backup with SuperDuper, Time Machine & iCloud
    "The world is full of nice people…… If you can’t find one, be one."

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