Enabling TRIM Support in El Capitan?

Discussion in 'OS X El Capitan (10.11)' started by docprego, Sep 29, 2015.

  1. docprego macrumors 65816

    Joined:
    Jun 12, 2007
    Location:
    Henderson, NV
    #1
    I've been running Yosemite on a 3rd party SSD in my Mac mini server for the last 6 months. Of course TRIM support is not available in this configuration. BUT El Capitan does allow 3rd party SSD support. Will I simply have to upgrade to El Capitan tomorrow and TRIM support will be enabled automatically or is there something I need to be aware of?
     
  2. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #2
    TRIM support for 3rd party SSDs was enabled back when 10.10.4 was released. It is not automatically enabled, and won't be with 10.11.
    It's actually easier to enable in 10.10.4 or 10.10.5 than in 10.11, so you may want to just go ahead and enable it before upgrading. It'll stay enabled when you upgrade to 10.11.
    Just enter
    Code:
    sudo trimforce enable
    in Terminal, and enter your admin password when prompted, then follow the prompts and the computer will restart.
     
  3. docprego thread starter macrumors 65816

    Joined:
    Jun 12, 2007
    Location:
    Henderson, NV
    #3
    Thank you.

    What do I have to do to enable it? And is it during the installation process or after the fact?
     
  4. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #4
    I made edits with more detail to my first post.
     
  5. docprego thread starter macrumors 65816

    Joined:
    Jun 12, 2007
    Location:
    Henderson, NV
    #5
    Much appreciated. Last question: is there a way to verify trim is enabled?
     
  6. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #6
    You can look in System Profiler at that particular device in the SATA section where you'll see:
    TRIM Support: Yes
    if it's enabled.
     

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