Here's how to enable TRIM support on third-party SSDs
Now, the good news we want to share with you today is that Apple has finally decided it was time to give people what they want, so they’ve added the "trimforce" command that lets users enable TRIM support on third-party SSD disk drives on the recently released Mac OS X 10.10.4 (Yosemite) update.
Probably few of you know that OS X was the only operating system that did not offer support for the TRIM function in SSD (Solid State Drive) disk drives that the user installed at some point in time after buying a Macintosh computer.Īpple offered TRIM support only for the SSD disks that came with the respective Macbook Pro or iMac computer, and until today, users had to rely on all sorts of applications, such as Trim Enabler, to unlock TRIM support for other SSDs as well. lol, dang.Last month, when Apple unveiled the upcoming Mac OS X 10.11 El Capitan operating system, some who had access to the first Beta build discovered that it introduces a new command-line that allows users to enable TRIM support on third-party SSD disks. Installed it to the 13″ white MacBook 5,2 - stop sign. I successfully installed Mavericks to the 256GB Toshiba SSD via external USB housing via my MacBook Pro. Upon finishing installing (again, this is Snow Leopard on HDD) an error message: “Oops!, NoSleep Kernel Extension is not loaded.” With the original HDD re-installed, I downloaded NoSleep 1.3.3 via Safari. Unsuccessful in resolving my issue in booting an OS X recovery via USB. Is there a kernel permissions problem on the motherboard? I’ve reset PRAM 50 times, and tried the SMC reset twice. If anybody can explain what might be happening, hit me. selected the Mavericks USB after restarting and option–stop sign.
With the SSD installed, I cannot access the Mac Recovery app to format my drive w Disk utility and install Mac OS X. Using a USB drive set up to install Mavericks (successful w 5 computers previously, one model identical to my issue today), greeted with the stop sign. Greeted with a grey screen and prohibitory stop sign. Holding option, Using a USB drive w Yosemite, I selected the Yosemite installation. Picked up a white 13″ 2009 Intel Core 2 Duo MacBook 5,2 4GB RAM. Thanks in advance, and thanks again for the great instructional video. But before I do that I would like to have a recommendation regarding how much free space should I partition optimally on my 60G Electra?
My video wouldn’t be so reassuring, so no Youtube broadcast from me!Īnyway I will be setting up the SSD with Yosemite using a USB Yosemite Installer that I created. The main problems I had with the install were unhooking the power supply from the motherboard, the upper position SSD OWC connector was too long and very difficult to push back while trying to connect, and the antenna mesh I could not get to fully seat but very close as I had to leave one screw out, but the two anchoring the lower position HDD were fine and every other aspect went quite smoothly for such a challenging task. The OWC installation video was invaluable. My intent is to get the boost in System Speed by making it my boot drive. I just finished my OWC Data Doubler installation upgrading my mac mini late 2012 i5 with an Electra 6g 60GB drive. The typical consumer may not ever seek to do kext edits for special function additions, but it’s disappointing to be restricting this avenue for those more advanced and/or hobbyists.įor more on TRIM and why our advanced OWC SSDs don’t need it, check out this post on the Rocket Yard: /blog/21641-with-an-owc-ssd-theres-no-need-for-trim After following the listed steps, you should now be back in OS X with Trim disabled.Īlthough OWC SSDs do not need TRIM to delivery consistent performance and longevity, we do see this change in Yosemite as another restrictive layer being added by Apple and that in of itself can be concerning. The fix can be found at under the heading “Reversing any changes by Trim Enabler”. However, if you did not do so, there is a command line fix available. If you’ve chosen to enable TRIM for use with an SSD not manufactured by Apple or OWC, we advise that you disable TRIM before upgrading to Yosemite to ensure your machine will boot properly after the install is finished.
However, if you are running a system with TRIM Enabler and you upgrade your Mac to OS X Yosemite, your machine will not boot after the install finishes due to the new Kext signing requirement in Yosemite – all kexts (drivers) now need to be approved/signed by Apple. Essentially, if you are using an OWC SSD, there is no need for TRIM. We’ve talked on the Rocket Yard about using TRIM with OWC SSDs before.