Do I need to uncheck 'Put hard drives to sleep...' if I'm copying files to ext. HDD?

Discussion in 'Mac Basics and Help' started by DobaKung, Mar 10, 2014.

  1. DobaKung macrumors newbie

    DobaKung

    Joined:
    Oct 13, 2011
    Location:
    Thailand
    #1
    Hi,

    I'm in the need to get outside of my home for a couple of hours. I let my Mac transfers files from SDHC to ext. HDD, so that when I come back home, it will finish its job. My question is, do I need to uncheck the Put hard drives to sleep when possible ? Because my computer is just like a bridge that lets files from SDHC transfer to ext. HDD, am I correct? So do I need to uncheck it to make the job finished without interruption?

    Thanks for every reply.
     
  2. adnbek macrumors 65816

    adnbek

    Joined:
    Oct 22, 2011
    Location:
    Montreal, Quebec
    #2
    No. The "when possible" means when the disk is idling. If it's being accessed in anyway way, it won't go to sleep.
     
  3. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Joined:
    Mar 2, 2010
    Location:
    www.emiliana.cl/en
    #3
    Correct. All Apple drivers, such as USB and Thunderbolt drivers support certain power management features. They tell the OS, that the drive is not idle.
     
  4. DobaKung thread starter macrumors newbie

    DobaKung

    Joined:
    Oct 13, 2011
    Location:
    Thailand
    #4
    Thanks to all of you :)
     

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