# | |
# UPDATE for 10.10.4+: please consider this patch obsolete, as apple provides a tool called "trimforce" to enable trim support for 3rd party SSDs | |
# just run "sudo trimforce enable" to activate the trim support from now on! | |
# | |
# Original version by Grant Parnell is offline (http://digitaldj.net/2011/07/21/trim-enabler-for-lion/) | |
# Update July 2014: no longer offline, see https://digitaldj.net/blog/2011/11/17/trim-enabler-for-os-x-lion-mountain-lion-mavericks/ | |
# | |
# Looks for "Apple" string in HD kext, changes it to a wildcard match for anything | |
# | |
# Alternative to http://www.groths.org/trim-enabler-3-0-released/ | |
# Method behind this madness described: http://forums.macrumors.com/showthread.php?t=1409151&page=4 | |
# See discussion in comments here: https://www.macupdate.com/app/mac/39654/lion-tweaks | |
# And here: http://forums.macrumors.com/showthread.php?t=1410459 | |
# And here: http://forums.macrumors.com/showthread.php?t=1480302 | |
# | |
# Yosemite: for recovering from stop sign on boot screen, please see http://www.cindori.org/update-on-trim-in-yosemite/ | |
# backup patched file | |
sudo cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage.original | |
# Important: Add "kext-dev-mode=1" as Kernel Arguments or the computer won't boot. | |
sudo nvram boot-args="kext-dev-mode=1" | |
sudo shutdown -r now | |
# looks for "Apple" string in HD kext, changes it to a wildcard match for anything | |
sudo perl -pi -e 's|\x00\x41\x50\x50\x4c\x45\x20\x53\x53\x44\x00|\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00|' /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage | |
# rebuild kext cache manually (could take a while) | |
sudo touch /System/Library/Extensions | |
sudo kextcache -m /System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext /System/Library/Extensions | |
# now reboot! | |
sudo shutdown -r now |
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TechFounder
commented
Sep 13, 2013
Any idea if 10.8.5 will break TRIM? I'm a bit afraid to update. |
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it works on 10.8.5, tried it out myself. |
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TechFounder
commented
Sep 13, 2013
Excellent, thanks! Is there a reason you omit the two lines which will clear the cache? sudo kextcache -system-prelinked-kernel sudo kextcache -system-caches |
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N4M3Z
commented
Sep 14, 2013
Confirmed. Works with 10.8.5. |
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SnakeO
commented
Sep 17, 2013
Thank you. Confirmed working on 10.8.4 with Samsung SSD 840 Series |
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ghost
commented
Sep 20, 2013
Thanks a Lot. (Working on 10.8.5 with OCZ Vector) |
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veresdaniel
commented
Oct 8, 2013
hi, thanks for this script. I had success on Mac mini (10.8.5) with it, but seems not working on my hacintosh 10.9GM (OCZ-VERTEX3). |
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tboerstad
commented
Oct 14, 2013
Hi, I am also using OCZ-VERTEX3. Suddenly today, after nothing more than a reboot, my mac refused to boot and went to the "no entry" grey screen. I did a verbose boot (alt-command v), and got a repeating error message saying "still waiting for root device". I traced this error message to "IOAHCIBlockStorage.kext". After running the perl command, and rebooting, my macbook is up and running again. Thanks a lot |
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N4M3Z
commented
Oct 22, 2013
Can more people please confirm if this does work on 10.9 GM? |
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TechFounder
commented
Oct 23, 2013
Anyone tried it on Mavericks (10.9)? |
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127-0-0-1
commented
Oct 23, 2013
Tried script for Mountain Lion 10.8.3 - 10.8.5 on 10.9 |
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does work with 10.9 |
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michaelcoluzzi
commented
Nov 16, 2013
Works with 10.9 with SanDisk UltraPlus 256G aka SanDisk SDSSDH2256G |
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duderman
commented
Mar 5, 2014
Works great! Thank you! |
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DenimTornado
commented
Mar 25, 2014
10.9.2 OCZ-VECTOR Works, thanks! |
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prakdavid
commented
Apr 14, 2014
Confirmed. Works on 10.9.2 with Samsung SSD 840 Pro Series |
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ghost
commented
Apr 21, 2014
Confirmed works with 10.9.2 with Crucial M550 1TB SSD. :) |
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ershovandrey
commented
May 15, 2014
Works with 10.9.3 with Samsung 830 256Gb |
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kevan
commented
May 24, 2014
THANKS!!! Works with 10.9.3 with M4-CT512M4SSD2 512GB |
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ghost
commented
Jul 1, 2014
not working anymore with 10.9.4 please provide an update |
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works for 10.9.4 now |
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oak8292
commented
Jul 1, 2014
Confirmed for 10.9.4 with a Plextor 256GB M6e. Thanks!!!! |
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remulocosta
commented
Jul 2, 2014
Confirmed for 10.9.4, KINGSTON SV300S37A120G Thanks! |
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fritztoch
commented
Jul 5, 2014
Works for 10.9.4, MacBookPro5,5, OCZ-AGILITY3 (setup as a Fusion drive with a WDC WD10JPVX). |
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lboecker
commented
Jul 10, 2014
Samsung 840 PRO |
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DrizzlyOwl
commented
Jul 14, 2014
Confirmed for 10.9.4 KINGSTON SV300S37A240G |
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sbaildon
commented
Jul 15, 2014
Confirming OS X 10.9.4 Samsung 840 EVO |
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ggreco
commented
Jul 24, 2014
I can add that this works also on 10.10 DP4, the previous version worked until DP2, it seems that 10.9.4 and 10.10 DP3+ share the same SSD driver :) |
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markhammond
commented
Aug 29, 2014
Beware: after 3 days of steady use I encountering random beach balling, culminating in losing the boot sector. I wasn't able to restore the boot partition or repair the disk. Similar reports on the plextor user forum. |
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morube
commented
Sep 4, 2014
Confirmed for 10.9.4, Samsung 840 EVO |
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pderby
commented
Sep 5, 2014
Confirmed for 10.9.5 13F24, Samsung 850 PRO 1TB running on MacMini 3,1 |
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mklengel
commented
Sep 18, 2014
Confirmed for 10.9.5 (13F34), Samsung 840 PRO 256 GB on MacPro4,1 |
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spherique
commented
Sep 19, 2014
Also confirmed for OS X 10.9.5 (13F34), PLEXTOR PX-256M5Pro (rev 1,06) on Macmini6,2 |
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kassner
commented
Sep 21, 2014
Confirmed for 10.9.5 (13F34), Kingston SV300S37A120G, MacbookPro5,5 |
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DeathBorn
commented
Sep 23, 2014
Works macbook5.1 (late 2008) with OS X 10.9.5, 8GB RAM, Samsung SSD 840 EVO. Also shows |
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sollarman
commented
Sep 27, 2014
Thank you! |
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chrboehm
commented
Sep 29, 2014
Confirmed for 10.9.5, Crucial_CT512MX100SSD1, MacBook Pro late 2011 |
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Mo-Tech
commented
Sep 30, 2014
Doesn't work with 10.9.5 & 256GB Samsung 850 Pro SSD. Takes all command, gives no error but no TRIM support after reboot. I have SSD connected on MacPro 5,1 (beneth the Superdrive, not into HD socket due to missing adapter). What can be wrong - SATA cable not the same as SATA socket or something about the software? |
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leyafo
commented
Oct 2, 2014
Thanks, you‘re good man。 |
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metsma
commented
Oct 17, 2014
For Yosemite you have to disable driver signature check |
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TechFounder
commented
Oct 17, 2014
This will break Yosemite final release so please don't use it. Perhaps you need to rebuild kext cache? Any idea how to fix now that my computer won't boot correctly? Update: disk repair won't fix this. I had to reinstall Yosemite from my boot partition. Someone should try this guy's version to see if that works: https://gist.github.com/rizal72/0f738cc6735744f84bb3 I've already done my good deed for today. |
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no, it still works. if you get stuck on reboot, please use this instructions, skipping the Trim Enabler Part: http://www.cindori.org/enabling-trim-on-os-x-yosemite/ |
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updated instructions for yosemite to prevent the boot screen lock according to http://www.cindori.org/enabling-trim-on-os-x-yosemite/ |
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megamosk
commented
Oct 18, 2014
OSX 10.10 |
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ivanke
commented
Oct 18, 2014
Confirmed for OS X 10.10 ( MacBook Pro 13-inch, 2012 mid ) |
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TechFounder
commented
Oct 19, 2014
Thanks, your revised instructions worked with Yosemite. |
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HPM41
commented
Oct 28, 2014
osx 10.10 |
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psousa
commented
Oct 30, 2014
Worked for me. Trim works. Thanks! |
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maartentromp
commented
Nov 5, 2014
Works on my Late 2011 Macbook Pro 13 with 10.10 with Samsung SSD 840 EVO 750GB |
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kike1
commented
Nov 15, 2014
i still get Trim enabler: No after run the script. What happened? i have a KINGSTON SV300S37A120G |
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lboecker
commented
Nov 17, 2014
@kike1 The commands after the first |
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BrainClot
commented
Nov 18, 2014
Thank you! Works on Yosemite 10.10.1 |
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Haramac
commented
Nov 18, 2014
Thank you very much! It works perfectly: Crucial M4 (firmware 070H) + Yesomite 10.10.1 :) |
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ivanke
commented
Nov 19, 2014
Confirmed for OS X 10.10.1 ( MacBook Pro 13-inch, 2012 mid ) |
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sman591
commented
Nov 20, 2014
Doesn't work for me - 2009 MacBook Pro + 120GB SanDisk Extreme... |
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pakpenyo
commented
Nov 21, 2014
Work perfectly for 10.10 clean install, then stuck with white circle grey background while update to 10.10.1. But its working after recovering and re enable. (Samsung 840pro 256Gb - MBP 15" early 2011). |
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blackgat
commented
Nov 25, 2014
This worked for me on MacBook (13-inch, Mid 2010) with 240G Intel 530 Series at 10.10.1 clean environment. |
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cpBurn
commented
Dec 18, 2014
I just did it on OS X Yosemite 10.10.1 on a clean install. Worked like a charm. |
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WildPenquin
commented
Dec 20, 2014
Thanks! Seems to work on Yosemite for me on my Kingston V300. |
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nobbs
commented
Dec 22, 2014
Still working with 10.10.2 Public Beta. |
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praetor1an
commented
Dec 30, 2014
How do I disable TRIM on 10.9 before upgrading to 10.10? |
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matbhz
commented
Dec 31, 2014
Funny, I didn't work on my Yosemite 10.10.1. PS: In any case I downloaded Trim Enabler but I am curious to understand why this didn't work. |
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zadorozhko
commented
Jan 8, 2015
Confirmed for 10.10.1 and Samsung SSD 850 PRO. Thanks! |
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beh
commented
Jan 12, 2015
Works like a charm with 10.10.1 and a fusion drive setup with an Intel 330 120GB and a stock 1TB HDD. |
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Haramac
commented
Jan 28, 2015
Works perfect on 10.10.2, but after the update you need to turn it on again. |
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sourcerebels
commented
Feb 1, 2015
Thanks. This works perfect on Yosemite with Crucial MX100 256 GB in a 2012 Macbook pro. |
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drichardson
commented
Feb 6, 2015
Worked for me. Samsung 850 EVO 500GB on mid 2012 MacBook Pro with Yosemite 10.10.2 and Samsung EVO 250GB on 2011 MacBook Pro with Yosemite 10.10.2. I also wrote a tool called TRIMCheck that verifies TRIM is enabled on your SSD drives at each boot and shows a warning message if it is not. This is intended to remind you to rerun the steps in this gist in case an OS X update has updated the kext driver patched by these instructions. |
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tom-san
commented
Feb 8, 2015
The shell script works well on Mavericks 10.9.5. An additional tip regarding TRIM using Yosemite:
This way you won't have to mess with the kext signing still preventing write amplification. Please note: That worked for me on a Samsung 840. Maybe some SSD drives fail on the OS's TRIM command. So, please use at your own risk and better yet, make a backup prior to your first attempt. |
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mezhaka
commented
Feb 9, 2015
It did not work for me with my X25-E Intel SSD drive. (Yosemite 10.10.2, MacBook Pro, Late 2008). I tried it several times but I still get TRIM Support: No in the System Report. The Internets are controversial about why is that: some write that the SLC based SSD drives do not need TRIM, some argue. |
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Bialykot
commented
Feb 24, 2015
The script works fine on a Yosemite Macbook Pro with Samsung 840 Pro SSD. However, I understand that if I upgrade to a newer revision of Yosemite in the future, the kext signing may be switched on again by the upgrade, which will mean I won't be able to boot the computer (as TRIM is set to on). I'm very new to all of this so what are the steps for disabling TRIM before any upgrades, please? |
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robertcedwards
commented
Feb 27, 2015
Thank you!!! |
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managr
commented
Feb 27, 2015
This is so cool. Samsung SSD 840 PRO Series says: |
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GaborTB
commented
Mar 3, 2015
If I used the SDD for long without TRIM enabled and apply this script, does OSX zero out all pages that are currently filled up with deleted file data on the SSD retroactively? |
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hfoffani
commented
Mar 10, 2015
@Bialykot What happens after a kernel upgrade is that Yosemite turns TRIM off. You'll be able to boot but TRIM is deactivated and you need to apply the procedure again. Of course, there's no guarantee here... |
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Bialykot
commented
Mar 10, 2015
hfoffani - thanks for that. I've just installed the latest security patch to Yosemite 10.10.2 and all went OK and TRIM was still enabled after the update. BUT ... what if there is a more major patch/upgrade to Yosemite - e.g. to 10.11? would I have to disable TRIM before applying the upgrade? And if so, what are the exact steps / script to do this? Sorry if the questions seem a bit naive. Just want to be as sure as I can not to mess up my BBP. (I do have a full backup but this takes several hours). BTW - the TRIM really works well on my Samsung 840 pro. Without TRIM I was getting 50-100Mb/s write speeds but with it activated I always get around 500Mb/s. :) |
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hfoffani
commented
Mar 11, 2015
Bialykot. No, you don't need to anything. After upgrading, you'll see that TRIM is unsupported again so you have to apply this patch (or the corresponding one) again. That's why many of us had switched off OS X autoupdates. It's better to check this site before upgrading in case some incompatibilities appears in a future version. |
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phmich
commented
Mar 14, 2015
Thank you for that, it works for me
by the way, I have 2 SSD in my macbook pro 17inch
I expect that OSX update will not affect the original SSD, but will may be affect the additional SSD |
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smiera
commented
Mar 18, 2015
Thank you! 10.10.2 and Samsung SSD 840 EVO work great. |
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a01fe
commented
Apr 8, 2015
It doesn't appear to be working after the 10.10.3 update. After running the |
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beh
commented
Apr 8, 2015
Same result as rbfinch, the perl reg-exp magic does nothing on 10.10.3 |
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andrewpsy
commented
Apr 8, 2015
replace the perl command with this one worked for me: source http://www.insanelymac.com/forum/topic/298507-enable-trim-on-non-apple-ssd/ |
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petermolnar-hu
commented
Apr 9, 2015
Thanks andrewpsy, you saved my day;). The new perl script line worked for me as well. |
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updated for 10.10.3, thanks @andrewpsy |
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beh
commented
Apr 9, 2015
Thanks, worked like a charm |
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pvl7
commented
Apr 10, 2015
Thank you! |
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nychan
commented
Apr 14, 2015
working great with late 2009 unibody macbook + 10.10.3 + OCZ Agitility 3 |
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todesto
commented
Apr 17, 2015
Thank you, works great with my 2010 macbook pro + Corsair SSD. |
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francisceril
commented
Apr 24, 2015
How can I revert back or disable it because I have a new update which fixes graphics for my iMac? Please help. |
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highks
commented
Apr 27, 2015
Thank you very much, this works very well on a Macpro 2013 with four Samsung 840 EVO in an Akitio Thunder2Quad case (which is a Thunderbolt 2 case with four SATA Slots, the drives are configured as a RAID 1+0 in OSX 10.10.3) |
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ralfbergs
commented
Apr 30, 2015
@francisceril: You don't have to for such a small update. It's not a complete OS update you are mentioning... |
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ralfbergs
commented
Apr 30, 2015
This script still works in 10.10.4 public beta (10.10.4 (14E11f)). |
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cundi
commented
May 12, 2015
confirmed. It works on 10.10.3 |
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ralfbergs
commented
May 16, 2015
This script still works under public beta 10.10.4 (14E17e). |
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mashrum
commented
May 20, 2015
MacBook Pro 6,1 (17' Mid-2010), 10.10.3, Samsung 850 pro 1T = Ok! |
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eduardonunesp
commented
May 20, 2015
MacBook Pro (13-inch, Early 2011), 10.10.3, KINGSTON SV300S37A240G |
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chka
commented
May 27, 2015
MacBook Pro (13-inch, Mid 2012), 10.10.3, Samsung SSD 840 EVO 250GB |
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ralfbergs
commented
May 28, 2015
This script still works under public beta 10.10.4 (14E26a). |
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herrernst
commented
May 30, 2015
I wonder if it even is necessary to keep |
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oniksfly
commented
May 30, 2015
Worked for me with OS X 10.10.3 on macbook pro mid 2009, SSD Corsair Neutron. |
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khpatel4991
commented
Jun 5, 2015
How to use this script from windows or MAC? |
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herrernst
commented
Jun 6, 2015
@khpatel4991 You'd have to enter those commands in Mac OS X Terminal (in Applications - Utilities). If this is too complicated for you, you're better off using [https://www.cindori.org/software/trimenabler/](Trim Enabler). |
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ralfbergs
commented
Jun 10, 2015
This script still works under public beta 10.10.4 (14E33b) |
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highks
commented
Jun 16, 2015
I just read the happy news that in OSX El Capitan, there will probably be an official OSX-tool named Trimforce, which enables TRIM for all SSDs if the user chooses to do so. Without having to deactivate the kext-signing, that is! http://9to5mac.com/2015/06/12/os-x-ssd-trim-support-el-capitan/ I really hope this is true, it would prove that Apple is still able to make sane decisions and listen to their users! |
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ralfbergs
commented
Jun 16, 2015
This script still works under public beta10.10.4 (14E36b) |
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HofiOne
commented
Jun 18, 2015
OCZ-AGILITY3 10.10.3 |
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ghost
commented
Jun 28, 2015
MacBook Pro (15-inch, Late 2011), 10.10.3, Crucial CT500MX200SSD1 |
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TechFounder
commented
Jun 30, 2015
With the new 10.10.4 trimforce now enabled, do we still need this? I think it's just a matter of running |
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ralfbergs
commented
Jun 30, 2015
@TechFounder: Confirmed. This patch is no longer required. |
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lboecker
commented
Jul 1, 2015
@TechFounder @ralfbergs This is great news. Thanks for sharing! BTW: Make sure you undo the changes the script made after updating to 10.10.4. Something like: sudo rm /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage.original
sudo nvram -d boot-args
# Not sure if these are really necessary
sudo touch /System/Library/Extensions
sudo kextcache -m /System/Library/Caches/com.apple.kext.caches/Startup/Extensions.mkext /System/Library/Extensions
# Reboot and run `sudo trimforce enable` |
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gchriswill
commented
Jul 1, 2015
|
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pvl7
commented
Jul 2, 2015
"sudo trimforce enable" didn't work for me on 10.10.4. Still had to use the script to change the driver signature and disable security checks :( |
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nychan
commented
Jul 12, 2015
I got some issue when disabling the changes done by this script and booted to the STOP sign screen after using sudo trim force enable, one of the crucial thing I missed when disabling the patched driver is I did not remove the patched driver file in "/Volumes/Your Disk Name", seems the guide in the link is good enough for me to fix https://www.cindori.org/trim-enabler-and-yosemite/, though I did mistyped chown/chmod lucky no permanent damage is done anyway, after all the mess I did at least it is working for the TRIM without a patched driver under 10.10.4! |
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howtosayhello
commented
Jul 14, 2015
Used this script, even for 10.10.4, always perfect, thanks |
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ctismer
commented
Aug 21, 2015
but it no longer works with 10.10.5 :-( |
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drichardson
commented
Oct 8, 2015
Anyone tried with El Capitan 10.11 yet? I'm getting an |
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for 10.10.4 and higher it is just: |
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defycgn
commented
Nov 14, 2015
New Solution worked for me on OS X El Capitan 10.11.2 Beta (15X40a) |
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wviana
commented
May 30, 2016
•
KINGSTON SV300S37A |
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brianonn
commented
Dec 19, 2016
PLEXTOR PX-256M6S |
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nkichukov
commented
Apr 3, 2019
'trimforce enable' worked like a charm on HighSierra. Thank you so much! |
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0ver387 commentedSep 4, 2013
Thank you