![]() ![]() I don’t want to disable a security feature! Is there no other way to get Trim? It is important to note that the kext-signing setting is global, if you disable it you should be careful to only install system drivers from sources that you trust. To continue to use Trim Enabler and continue to get Trim for your third party SSD, you first need to disable the kext signing security setting. "Since Trim Enabler works by unlocking the Trim driver for 3rd party SSD’s, this security setting prevents Trim Enabler to enable Trim on Yosemite. I got caught in that trap when first enabling TRIM within Yosemite a while ago. That doesn't disable it for other software. The TRIM software simply bypasses it when you install it. You should now be back in OS X with Trim disabled.You don't lose the security. Step 5: Wait until it finishes (can take as long as 5-10 minutes, don’t abort it) and reboot. Touch /Volumes/"Your Disk name"/System/Library/Extensions nvram -d boot-argsĬp -rf /System/Library/Extensions/IOAHCIFamily.kext /Volumes/"Your Disk name"/System/Library/Extensions/IOAHCIFamily.kextĬhown -R root:wheel /Volumes/"Your Disk name"/System/Library/ExtensionsĬhmod -R 755 /Volumes/"Your Disk name"/System/Library/Extensions If the volume name contains spaces, use quotes around it. Step 4: Run these commands, replacing Your Disk Name with the name of your Mac disk volume. There is also a second manual on how to reverse all TRIM changes:įollow these steps to undo all changes made by Trim Enabler. You should now be back in OS X with Trim enabled Step 8: Wait until it finishes (can take as long as 5-10 minutes, don’t abort it) and reboot. touch /Volumes/"Your Disk Name"/System/Library/Extensions Step 7: Run these commands, replacing Your Disk Name with the name of your Mac disk volume. Step 6: Reboot back in to Recovery Mode again Step 5: Run this command: nvram boot-args=kext-dev-mode=1 If it says “error getting variable”, continue with these steps: Step 4: Run this command: nvram boot-argsĭoes it say “kext-dev-mode=1”? if so, you can skip to Step 6. Step 3: Open the Terminal from the menu bar Step 2: Is your volume encrypted (FileVault)? If so, first open Disk Utility from the menu bar and unlock/mount your drive Step 1: Boot recovery mode by holding Cmd+R during boot Some users also report they were able to make TRIM work with this procedure:įollow these steps to disable kext-signing and rebuild your kext cache. This article describes the procedure to get your system back. This article says that indeed El Capitan system security may be your problem and that you should use their software (Disk Sensei). I have read several forum posts reporting similar problems. Should I still have done the kext-dev-mode=1 thing? Since that requires 10.10.4 and may require disabling system security on El Cap.Īre they up to something with "disabling system security on El Cap". It is even better than using the new built in trimforce command, On page Crindori Disk sensei I found: This is the easiest and safest way to enable Trim on OS X. crossed out circle shows (every 10 seconds it changes for approx 0.3 seconds for apple logo, but the computer does not boot)Įdit.in Terminal typed sudo trimforce enable, after a minute computer reboot.saw in system information SATA suport "Trim support: no".logged in successfullty to a newly setup osx as a user with admin rights,. ![]() restored the backup from the time machine.booted from USB install disk for El Capitan.I am running OSX 10.11.6, and AFAIK it should just work. I have succeeded to transfer everything from a Time Machine backup, but when I wanted to enable the trim by sudo trimforce enable, then after a restart computer just shows the "crossed out circle". I am using 2009 macbook pro and I wanted to upgrade the default hdd to a Samsung Evo 850. ![]()
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