TRIM support for Retina MBP

Discussion in 'MacBook Pro' started by SaleenS351, Jun 15, 2012.

  1. SaleenS351 macrumors 6502

    Joined:
    Dec 2, 2004
    Location:
    California
    #1
    Does the new RMBP have trim support for SSD? How will you manage the SSD in the RMBP?
     
  2. plazmic macrumors newbie

    Joined:
    Jun 14, 2012
    #2
    Yes TRIM is supported and enabled.

    If by manage, you mean physically repair? Its using a proprietary chip that 3rd parties may or may not be able to manufacture compatible drives for. At this point, your only option for repair is through Apple directly.
     
  3. aaronw1986 macrumors 68030

    Joined:
    Oct 31, 2006
    #3
    Yes, it would come enabled. I wonder what would happen when reformatting though. If you reinstall Mountain Lion from fresh, what happens with TRIM?
     
  4. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #4
    TRIM support happens at the OS level, i.e. if the OS supports it, it works. As far as I know, Mountain Lion supports TRIM as well (would be a huge drawback if it didn't). Of course you still need an SSD that supports TRIM but all modern SSDs do.
     
  5. aaronw1986 macrumors 68030

    Joined:
    Oct 31, 2006
    #5

    I read all the time of people who install a third party SSD have to enable TRIM. Wouldn't it be the same when reformatting, even if it is an Apple supplied one?
     
  6. Hellhammer Moderator

    Hellhammer

    Staff Member

    Joined:
    Dec 10, 2008
    Location:
    Finland
    #6
    That's because Apple has limited TRIM support to only their SSDs. A kext file needs to be edited so that TRIM is enabled for SSDs other than "APPLE SSD XXXXX". When you reinstall OS X, the kext file will also be replaced by the original version, which means you would have to re-enable TRIM if you have a third party SSD. For Apple SSDs, this isn't a problem because the kext file still enables TRIM on their SSDs.
     
  7. Solowalker macrumors regular

    Joined:
    Feb 13, 2008
    #7
    Anyone have more firm evidence (or a reference) of blanket TRIM support in Mountain Lion?
     
  8. TheMacBookPro macrumors 68020

    TheMacBookPro

    Joined:
    May 9, 2008
    #8
    [​IMG]

    No TRIM mods or apps installed, this is all from the fresh install of ML DP4.
     
  9. mattonthemoon macrumors regular

    mattonthemoon

    Joined:
    Feb 25, 2007
    Location:
    Toronto, ON
    #9
    Running DP4 from a clean install, and yep
     

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