TRIM enable for 840, any problems?

Discussion in 'OS X Mountain Lion (10.8)' started by DeadeyeM, Apr 25, 2013.

  1. DeadeyeM macrumors member

    Jun 12, 2012
    Hello, i've recently had my SSD Samsung 840 replaced because after i brought my Macbook Pro to friends place my mac din't reboot showed Blinking Question mark Folder, i've tried plugging this SSD to my PC and it wont show it. So i'm not sure what could have caused this problem.

    So right now i have replacement so wandering should i enable TRIM on it? and if so, what is the best method, any recommendations?
  2. mrnoglue macrumors member

    Jul 14, 2011
  3. DeadeyeM thread starter macrumors member

    Jun 12, 2012
    I have used the chameleon one, so not sure should i use it again?

    Biges question did it caused the problem at the first place....
  4. stchman macrumors 6502a

    Jul 16, 2012
    St. Louis, MO
    I thought TRIM was enabled by default for all SSDs after Lion came out?
  5. w0lf macrumors 65816


    Feb 16, 2013
    No just the ones that apple ships built in.
  6. August West macrumors regular

    August West

    Aug 23, 2009
    Land of Enchantment
    I've used TrimEnabler on both the 840 in my Mini and the one in my MBP since I installed the drives with zero problems.
  7. johnnnw macrumors 65816


    Feb 7, 2013
    Shouldn't cause any problems!

    If you're worried you don't NEED to use it. I'm pretty sure the 840 has built in garbage collection.
  8. Inconsequential macrumors 68000

    Sep 12, 2007
    Personally use Trim Enabler.

    Have done on my Intel X25-Ms and 330 series as well as Samsung 830 and 840 series SSDs.
  9. beachmusic macrumors regular


    Jan 12, 2013
    St. George Island
  10. jimthing macrumors 65816


    Apr 6, 2011
    London, UK
    TRIM *should* be enabled!

    See this thread:

    The last post links to a German language article which apparently confirms TRIM should definitely be enabled from Samsung employee's lips.

    ...and may need re-enabling after any OS X updates or if you reinstall, as well.

    Hope this helps anyone unsure.

    Useful comments section (especially for 840 Pro *256GB* users, but may help others), here:

  11. vistadude macrumors 65816

    Jan 3, 2010
    I had TRIM enabled on my first samsung 840, but it died within a week. On my replacement SSD, I did not enable TRIM. It work just as fast, on windows and OS X. It's been a good 3 months without TRIM and it works fine.

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