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,.
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