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How to enable trim High Sierra?

Matty_TypeR

Matty_TypeR

macrumors 6502a
Original poster
Oct 1, 2016
642
556
UK
I have downloaded cinder's trim enabler, but it just don't work, enable, restart, no prompt to allow driver as per instructions, every time I open it it says its off?



any idea's guys?


Matty
 
Matty_TypeR said:
I have downloaded cinder's trim enabler, but it just don't work, enable, restart, no prompt to allow driver as per instructions, every time I open it it says its off?



any idea's guys?


Matty
Click to expand...
Enable it the same as has been done for several versions of macOS now:
Code: 
sudo trimforce enable
There's no need for any third party product.
 
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In High Sierra 10.12.6 and Mojave TRIM is auto-enabled I believe. No need to run the command nor use the trim enabler utility.
 
well I checked in system report and it was not enabled, but the command (sudo trim force enable) has now enabled trim. so all good.

thanks chrfr
 
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chrfr said:
TRIM is only automatically enabled for Apple SSDs. It has to be turned on manually for aftermarket SSDs.
Click to expand...
Not since 10.12.6.
Try it! Do a clean install with an SM951 (AHCI) for example and it’ll be enabled by default.
 
Squuiid said:
Not since 10.12.6.
Try it! Do a clean install with an SM951 (AHCI) for example and it’ll be enabled by default.
Click to expand...

That is one of the exceptions. The SM951 is the same as an SSUBX but without Apple propriety connections. There's a couple more AHCI SSD's as well, but not many AFAIK.

And honestly, there is no blanket rule at the moment that will be correct 100% of the time. Technology and Apple keep changing the game. IMHO, it's a do what you have to, to make it so situation.
 
Yes I think NVMe SSDs get it enabled by default, no matter what the brand (mine is a 2nd gen WD Black).

I have never had a SATA SSD get TRIM enabled automatically, but I strongly suspect that the ones offered stock in the cMP 5,1 would. I'm occasionally tempted to buy one on ebay to play with but they are apparently sorta crappy performers compared to just buying a Samsung or Crucial SATA3 drive.
 
bookemdano said:
Yes I think NVMe SSDs get it enabled by default, no matter what the brand (mine is a 2nd gen WD Black).

I have never had a SATA SSD get TRIM enabled automatically, but I strongly suspect that the ones offered stock in the cMP 5,1 would. I'm occasionally tempted to buy one on ebay to play with but they are apparently sorta crappy performers compared to just buying a Samsung or Crucial SATA3 drive.
Click to expand...

Actually, there are a couple of SATA SSD's that will get enabled by default, but they are Genuine Apple, and Knock Offs of Genuine Apple. They of course use other names but I can't remember at the moment. I also know there is a 3rd that's not a knock off, but uses sketchy firmware to pull it off.

I looked into grabbing one, and the cost/benefit ratio wasn't sensible to me. Just as easy to make TRIM happen manually.

Here's one of the better products...

https://www.angelbird.com/prod/ssd-wrk-for-mac-929/
 
Last edited:
I just did a clean install on SM951 and it didn't enable trim on the latest high Sierra. that was installed via usb and trim was disabled. the sudo command enabled it for me.
 
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Yeah lol there are obviously still nuances to the pattern of which SSDs get enabled by default. I think it's safe to say that all Apple blades and SATA SSDs get it, but maybe the "matching" Samsung-branded drives only do if they're on a similar firmware revision or have some other sort of configuration that mimics the Apple-branded versions.

The puzzle solver in me would like to get to the bottom of it, but at the same time like you said, it's not a big deal to just enable it manually.
 
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Matty_TypeR said:
I just did a clean install on SM951 and it didn't enable trim on the latest high Sierra. that was installed via usb and trim was disabled. the sudo command enabled it for me.
Click to expand...
Are you 100% sure your USB had 10.12.6 on it?
I did the exact same thing two days ago, with the same drive, and TRIM was most definitely enabled by default
 
Squuiid said:
Oops. I did! Sorry. Yes, the latest High Sierra, 10.13.6
Click to expand...


Yes it was the latest 10.13.6 high Sierra and trim was not enabled on a fresh install from usb stick created from the download on Monday from App Store. I had been useing el captain with no issues I thought it best to clean install fresh but no trim was enabled in the latest download.

So not all drives get it from Sierra then, no problem to enable though, all good now.
 
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