Who will NOT upgrade to Yosemite because of TRIM support issues?

Discussion in 'Mac mini' started by Cassady, Nov 6, 2014.


Will you upgrade to Yosemite in spite of TRIM support issues?

  1. YES - I'm prepared to run the kext-signing workaround

    17 vote(s)
  2. NO - I'm not prepared to take the risk of something going wrong

    8 vote(s)
  3. YES - I will upgrade, but won't bother enabling TRIM (not that important anyways)

    28 vote(s)
  4. NO - Don't like Yosemite in any event - happy on ML/Mavericks

    16 vote(s)
  1. Cassady macrumors 6502a


    Jul 7, 2012
    Hello all,

    Managed to purchase a 2012 Mini 2.3 i7 yesterday - will presumably still have ML installed.

    Curious as to who (if any) have opted NOT to upgrade to Yosemite, due to issues with TRIM?

    I'm running Yosemite on my MBP - and ran the workaround to get it enabled. Hope I don't live to regret it - but, well, will cross that bridge if that day ever arrives. (Decided to upgrade to Yosemite (and really loving it) without really noting the possible issues about TRIM.)

    Since I now have the option of staying on ML on the new Mini - wondering whether TRIM alone is a good enough reason to hold off on upgrading? Only have a 1TB spinner inside, but will bounce to a 3rd-party (probably Crucial) SSD in a few months' time...

  2. Skibba macrumors member

    Oct 20, 2014
    This poll is relevant to my interests. I too just picked up the 2012 2.3 quad and I'm considering my options due to the following information I've read:-

    1) No Trim enabler in Yosemite
    2) Apple OEM SSD's can be picked up on ebay to overcome issue 1)
    3) Apple SSD's are slow compared to MX100 & 840 evo etc
    4) There is a known issue with the 840/840 evo (Info here) and apparently some issues with the MX100 too (Comments here)

    This leaves me holding fire on doing anything at the moment. I'm leaning towards staying on Mavericks and looking for a rock solid SSD with no reported issues.
  3. magbarn macrumors 68000

    Oct 25, 2008
    The 840 EVO works great after the fix. And unlike the other chicken littles here, I'm not afraid of turning off the kext signing. I like keeping my SSD performance at top shape and Yosemite's features like hand-off etc...
  4. ZipZilla macrumors regular

    Dec 7, 2003
    I downgraded to Mavericks not because of TRIM. I don't care about TRIM, from what I am reading it's not a huge issue.

    For me, Mavericks just flies on my 2012 Mini and Yosemite is a slug. It's because of my 4GB of RAM and 5400rpm stock drive.

    When I upgrade to 16GB of RAM and an SSD, I'll revisit Yosemite. By then, it will have been in the oven longer and the bugs fixed.
  5. iizmoo macrumors 6502

    Jan 8, 2014
    I use my mini as a server, the process to upgrade from 10.9 to 10.10 seem to break ARD on the one machine I tried it on... scared...
  6. elolaugesen macrumors regular

    Aug 1, 2008
    Trim or SSD Firmware Management

    The real issue is.....

    Do you or do you not need TRIM...

    some heavy users never implemented it and depend on the firmware features.
    Crucial MX500 is suppose to not require Trim at all??

    So what is the real story??????

    I have a crucial MX500 480gb and use Trim at the moment....
  7. Darby67 macrumors 6502

    Jul 5, 2011
    the corner of Fire and Brimstone
    ARD is likely not broken. If you purchased the boxed version, before the App Store existed, the App Store wants to apply an update that can't be applied. A long thread here started here after release of Yosemite. Check and see if you are having the same issue, a post by "mathewhellums" helped many including myself. More of an annoyance until Apple rectifies.
  8. Crosscreek macrumors 68030


    Nov 19, 2013
    Trim is not a big deal if your SSD has good garbage collection and most do anymore.

    Trim just makes it more efficient.
  9. jbarley macrumors 68040


    Jul 1, 2006
    Vancouver Island
  10. kaibob macrumors regular

    Jun 21, 2010
    Prescott, Arizona
    I did a search of the Crucial site and found a number of informative articles and moderator posts on trim and garbage collection. I have provided a link below followed by a quick quote from each article. It should be noted that the second article references Yosemite and the third deals specifically with trim on a Mac.

    Just as an aside, the first article makes note of the importance of computer idle time to garbage collection. This makes sense but is not something I had considered before.


    Trim is helpful but Crucial SSD's have active garbage collection that "helps an SSD maintain optimal performance."


    "TRIM is not necessary for most users, but if you are more of a power user than you may consider it."


    "The question of enabling TRIM really has to be answered by the user. If you are a casual user that uses your system for internet, email, and other light tasks, garbage collection built into the firmware of Crucial SSD's will probably be plenty to keep your SSD running fast and healthy. If you are more of a power user that does picture and video editing, or other tasks that require a lot of writes, enabling TRIM might be more useful to you."
  11. Mizouse macrumors regular

    Nov 5, 2014
    The refurb 2012 mini I got from Apple 1 week ago came with Mavericks.

    I'm keeping it there until I install more ram and an SSD. Considering getting an apple OEM SSD, sure there are faster drives but I'm sure it's still MUCH faster than the stock 1TB 5400rpm drive
  12. CausticPuppy macrumors 65816

    May 1, 2012
    I have a Crucial M4 and upgraded to Yosemite. Never bothered with TRIM.

    So far, so good. Even without TRIM, the sun still rose this morning and my honey nut cheerios still tasted just as good.
  13. Cassady thread starter macrumors 6502a


    Jul 7, 2012
    Wow... neck and neck... Did not expect such a close things between some of them....
  14. elolaugesen macrumors regular

    Aug 1, 2008
    Thank you for input.. I never ever install a new OS for at least six months or until I find a piece of software that requires the new features of the OS.

    At this point in time I will wait until the new year.

    thank you...
  15. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Mar 2, 2010
    Same here.
  16. iizmoo macrumors 6502

    Jan 8, 2014
    Not the ARD software, the ARD service on the server. Doing a remote OS upgrade via ARD, after it reboot and do it install thing, completely cut out ARD service and I couldn't connect to the machine anymore. Was so not supposed to do that... :rolleyes:
  17. mvmanolov macrumors 6502a

    Aug 27, 2013
    i have a 2012 i7 mini and bought it with apple's ssd (SM 830). i use this drive as a storage drive i also bought a 128gb SM 850 PRO and have been running this now since Yosemite came out without trim. i do not see any noticeable performance degradation. that being said it is worth it pointing out that

    1) the mini is the home server/htpc and is used daily.
    2) the 850 pro is only used for os and caching service, in other words its only about 1/2 full... (which from what i understand make a difference in relation to trim and the usage of space.

    so i'll give it a few more months and decide what to do about it.
  18. scottsjack macrumors 68000

    Aug 25, 2010
    I've got Crucial M500s in two of my Macs. I keep at about 500-600GB out of the 960GB available and haven't had any issues in about nine months. For a short while they had TRIM near the end of their Mavericks careers. Maybe that set them up for Yosemite! Who knows.
  19. Tinmania macrumors 68040


    Aug 8, 2011
    I don't see the logic in staying on Mavericks due to trim unless you don't like Yosemite for other reasons.

    The main issue with trim on Yosemite is that you have to disable kext signing. With that disabled trim works.

    On Mavericks and earlier there is no kext signing anyway.

    I'd rather have Yosemite without kext, a feature I never had anyway, than to have to stay with an older OS version. However, I prefer Yosemite over Mavericks so that was an easy call for me.

    I should note that my SSD tested much better in Blackmagic with trim enabled than not. So enabling trim was an easy call too.

  20. scottsjack macrumors 68000

    Aug 25, 2010
    Last night, just for fun, I took a spare SSD, popped it in a toaster and restored it to Mavericks via Time Machine. Typically Apple it worked perfectly. After installing the required passwords for various apps I booted the mini from it via the USB3 toaster (a NewerTech Voyager).

    Sorry Mav but after using Yosemite for a couple of weeks Mavericks looks way so last year. I'll stay with Yosemite and disable kext signing if I feel the need for TRIM. All three of my M500 SSDs have been TRIMless for most of their nine month life yet seem to work OK.
  21. Mr. Retrofire macrumors 601

    Mr. Retrofire

    Mar 2, 2010
    OS X 10.6 and newer use kext signing. AppleSMC.kext in Snow Leopard contains a _CodeSignature directory with the appropriate files.
  22. Tinmania macrumors 68040


    Aug 8, 2011
    I would hope you knew that I meant enforced (as in by Apple) kext signing is now an issue with Yosemite and not anything older. It is a Yosemite issue.

    It is not only an issue regarding 3rd party trim support. The hackintosh crowd is impacted as well.

  23. brentsg macrumors 68040

    Oct 15, 2008
    Most people would never notice the effects of not using TRIM. They've just read about it and overestimate the whole thing.
  24. grandM macrumors 6502a


    Oct 14, 2013
    One could state :apple: reads macrumors oftenly
    One could even state :apple: learns from our comments
    One could certainly state :apple: uses these new insights to try letting us pay more

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