Some recommended you reboot into safe mode after enabling TRIM support, and running a drive health check, as that supposedly honors TRIM support and tells the drive to start doing its thing for previously deleted files right away. Reply with y to the question, and hit enter.Īfter your computer has rebooted you can confirm TRIM support is fully enabled by checking System Report again. Make sure you are ready for your machine to immediately want to reboot after this command. To enable trim support, simply open up a Terminal, and type in the following command. But I have not tested this, so please do let me know if this is even possible if that's something you end up trying. From what I can tell you cannot pick and choose which drives you want to enable support for, though you might be able to achieve that if you desire by temporarily unplugging whichever SSD you don't want to enable TRIM support for before running the command. Once run, this will enable TRIM support on all SSD drives installed. Enable TRIM supportĮnabling TRIM support is just one single command. It simply refers to whether or not macOS currently has TRIM support enabled for this particular drive. Note that in this context, "support" does not mean whether or not your drive actually supports it.
Select your SSD and look through its details until you find TRIM Support.
#Trim enabler for mac mac#
To check what the current status is of TRIM support, head on over to System Report (Apple menu » About This Mac » System Report.) and head for the SATA/SATA Express or NVMExpress section, depending on what kind of drive you have installed. While it can be ok to be a bit brave, if an SSD is known to not support TRIM support (or not well), it's probably best to avoid enabling it. And, so long as you keep a proper backup, in the worst case scenario of your particular SSD not supporting TRIM properly, you can revert back easily.ĭo note though, that it will be good for you to check online first to see if anyone else has used the SSD you have with TRIM enabled. My guess is that if you're running a Hackintosh, you're probably used to dealing with scary sounding messages. Fortunately though, enabling TRIM support is easy enough, so long as you're ok saying yes to a scary sounding message. This is done because not all manufacturers follow the standards, and often just test for compatibility with Windows. We’ve enabled it on a pair of older Macs in the Orbiting HQ with aftermarket SSDs in them, and so far we’ve had no issues-giant scary warning notwithstanding.As you may or may not know, TRIM support is not enabled by default on macOS on any SSD not provided by Apple directly. Called trimforce, the utility can be executed from the OS X terminal, and it requires a reboot to start working.
#Trim enabler for mac install#
With today’s OS X 10.10.4 update, however, Apple has added a command line utility that can be used to enable TRIM on third-party SSDs without having to download and install anything.
If you took a Mac that originally came with a spinning disk and installed an aftermarket SSD in it yourself, the operating system wouldn’t use TRIM on the disk-at least, not unless you resorted to third-party tools. The lone exception to that list has been Apple’s OS X, which-at least until today-only supported TRIM on its OEM SSDs. Pretty much every operating system in use these days supports TRIM-a special ATA command that the OS sends along to an SSD when deleting files on that SSD. When you see the Operation succeeded message, the Mac will soon reboot with TRIM enabled. Further Reading Ask Ars: “My SSD does garbage collection, so I don’t need TRIM… right?” Enabling TRIM by using the trimforce command requires the Mac to reboot, which will happen automatically once the feature is enabled or disabled.
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