Author Topic: SSD TRIM Enable?  (Read 2067 times)

Offline FdB

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SSD TRIM Enable?
« on: April 09, 2019, 10:36:31 AM »
Have not checked this on Macs here that Iíve installed SSDs in -
but found this in my bookmarks just now while working on taxes.
As there have always been questions concerning TRIM with the SSDs
... thought perhaps someone  might want to check this out further?

And, this may only pertain to newer Macs.
If so, sorry for the waste of your time. ;)

https://www.cnet.com/how-to/installing-ssd-on-mac-trim-mistake/
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Offline Greystash

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Re: SSD TRIM Enable?
« Reply #1 on: April 09, 2019, 06:39:24 PM »
Thanks FdB! I thought this would have been enabled by default.. I'll have to check my Macs too

Offline Taube

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Re: SSD TRIM Enable?
« Reply #2 on: April 27, 2019, 02:01:17 AM »
Wasn't enabled on mine. Sheesh! Cheers, FdB!

Offline westinbrevard

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Re: SSD TRIM Enable?
« Reply #3 on: July 24, 2019, 01:45:18 PM »
Does anyone have an idea how to do this on an OS9-only system?

Offline hageir

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Re: SSD TRIM Enable?
« Reply #4 on: July 24, 2019, 05:58:57 PM »
(where it's not possible to add TRIM; I read somewhere you should partition the disk at 90-98% of it's size to reduce the wear on it or something)

Offline refinery

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Re: SSD TRIM Enable?
« Reply #5 on: July 25, 2019, 09:51:47 AM »
The best bet is to buy a drive that is under-provisioned and hope for the best. Under-provisioning basically does what hageir said, from the factory, leaving a chunk of the disk free for wear leveling. This is how it was handled before TRIM was developed for modern OSes. Look for drives that are slightly under "typical" capacities, ie 60gb instead of 64, 120 vs 128, 240 vs 256, etc.
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Offline ximiimx

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Re: SSD TRIM Enable?
« Reply #6 on: September 03, 2019, 08:15:15 AM »
(where it's not possible to add TRIM; I read somewhere you should partition the disk at 90-98% of it's size to reduce the wear on it or something)

Itís not possible on OS9 systems, and isnít available in OS 10, until OS 10.6
Itís not possible on anything before Microsoft OS 7 either..

Offline teroyk

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Re: SSD TRIM Enable?
« Reply #7 on: May 06, 2020, 02:32:52 AM »
(where it's not possible to add TRIM; I read somewhere you should partition the disk at 90-98% of it's size to reduce the wear on it or something)

Itís not possible on OS9 systems, and isnít available in OS 10, until OS 10.6
Itís not possible on anything before Microsoft OS 7 either..

It is just programming..sadly we cannot ask hints from guy who made support for Windows 95:
https://archive.org/details/trim_20190926

EDIT: BUT! example OWC says that "OWC SSD donít need TRIM. The SandForce controller takes care of garbage collection"
« Last Edit: May 06, 2020, 03:04:43 AM by teroyk »
I bought my first new Mac when OS X 10.1 released. And I bought that Mac because it had Mac OS 9 too. And I bought my first 68k Mac when Apple stopped PPC Macs.

Offline IIO

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Re: SSD TRIM Enable?
« Reply #8 on: May 06, 2020, 03:02:31 AM »
in practice it is enough if you just do not use all of the space a volume has. unused space can and will also be used when other segments (which are free, orphaned or in the trash) wears out.
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