However, you can enable it on most SSD disks, which do not support it by default, with the free Trim Enabler utility. 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. logged in successfullty to a newly setup osx as a user with admin rights, saw in system information SATA suport 'Trim support: no' in Terminal typed sudo trimforce enable, after a minute computer reboot crossed out circle shows (every 10 seconds it changes for approx 0. Jag har testat och nu står det TRIM Support: YES i system profiler. TRIM is generally disabled on all Macs shipped with an SSD installed by Apple. Called trimforce, the utility can be executed from the OS X terminal, and it requires a reboot to start working. 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. Trim Enabler can also analyze your drive and show information about it’s health and show lifetime statistics. ![]() 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. ![]() Further Reading Ask Ars: “My SSD does garbage collection, so I don’t need TRIM… right?”
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