If our disk works well it is not necessary to activate it, but if we want to activate it we have to perform a few steps. 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. It is this section in which we will find «Compatibility with TRIM» YES or NO. This check is simple and fast, we have to click on the apple logo> About this Mac> System report> SATA / SATA EXPRESS option. Having said this, it must be clarified that if we activate TRIM it is not bad on our Macs and we can see whether or not it is activated on our computer. At present this is no longer necessary and we do not need to activate TRIM since the current disks already have algorithms in the disk partitions that perform this cleaning in the memory so that they work quickly and without the need to touch anything. ![]() In these discs it was necessary to carry out a step before starting to use them so that they did not become slow in operation, when we say slow, we mean very slow. In those situations, enabling TRIM is effectively useless anyway. ![]() Also, keep in mind that TRIM is an ATA command that cannot be sent to SSDs connected with Thunderbolt, Firewire, USB, or PCIe (as in new Mac Pro models). To explain in a simple way what TRIM is, we will say that in the old disks or first SSDs that came to the market and that could be installed in Macs, it was necessary to wait for them to "adjust" before starting to store data on them, since they had to be cleaned. Although a third-party app from Cindori called TRIM Enabler has enabled third-party SSDs to work properly under OS X, Apple partially blocked the app last year, forcing users to disable a new. Enabling TRIM on such SSDs actually increases wear on the drive, because it causes data to be moved around unnecessarily.
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