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Mid 2012 model, A1278 / 2.5 GHz i5 or 2.9 GHz i7 processor.

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Cannot Enable TRIM on Crucial 1000GB MX500

I recently bought and successfully installed an iFixit-purchased Crucial 1000GB MX500 SSD.

Having both attempted to use SUDO TRIMFORCE ENABLE and a complicated set of Terminal commands I found by searching online, I nevertheless cannot get TRIM to show enabled in System Report.

The command line in Terminal seems to work, but checking SATA/SATA Express shows: “TRIM Support: No”.

Has iFixit offered for sale an SSD for which the utterly necessary TRIM setting cannot be enabled? (Why would they do that?)

Or, are we (as usual) being dicked with by Apple as we attempt to maintain and repair our devices?

(MacBook Pro (mid-2012, macOS 10.14.6), 8GB RAM)

Any advice?

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If you were using HFS+ TRIM command would work! But when using APFS TRIM is already enabled, Apple does it within the file system.

On APFS, macOS automatically performs a TRIM operation on the free disk space on boot via the AFPS Space Manager (spaceman). Therefore, as long as TRIM is enabled on the system (via trimforce for 3rd-party SSDs, see karolus's answer), you don't have to worry about it. There is no command and no need to manually trim the unused blocks.

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Why does System Report > SATA/SATA Express show: “TRIM Support: No” then?

(And yes, the drive is APFS.)

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@dwighthales - The act of TRIM is what’s important correct? The OS file system handles it in this case, not at the hardware level. Which is why the interface call out is NO

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Reading this (because my Crucial SSD is 3rd party), I wanted to be sure:

“Therefore, as long as TRIM is enabled on the system (via trimforce for 3rd-party SSDs, see karolus's answer), you don't have to worry about it.”

If TRIM is handled by the OS (10.14.6) behind the scenes, that’s all right, then.

I have been reading a lot online about how TRIM needs to be activated for 3rd party SSDs because Apple leaves it off for all but the SSDs it installs with the products it sells.

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@dwighthales - Contact Crucial and ask them if they offer trimforce, I know Samsung does.

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dwesl zal eeuwig dankbaar zijn.
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