Enabling TRIM much later after purchase

About 22 months ago, I purchased a couple Solid State Drives, one being the Crucial M500 (960gb) and the other being a Samsung 850 EVO (120gb). During this period, the TRIM has never been enabled... so TRIM Support has always been set to NO. Quite honestly, I never though much about enabling it and I'm not experiencing any speed issues.

Having said that, I would like to enable them using "sudo trimforce enable". Will I encounter any problems if they've never been enabled after all this time? I do have both drives backed up so I'm not worried there.

The Samsung holds files (no operating system) but the Crucial is partitioned, running Sierra on one volume and High Sierra on the other volume. Is this a problem?

Any feedback would be appreciated.

Thanks...

Mac Pro, macOS Sierra (10.12.6), High Sierra (10.13.1)

Posted on Nov 17, 2017 2:28 AM

Posted on Nov 17, 2017 9:06 PM

It should not be a problem enabling TRIM at any time. As I said, it is just a way for the file system to tell the SSD there are additional blocks that can be pre-cleaned for future writes.

When I enabled TRIM for my iMac with a 480GB OWC SSD, I used "sudo trimforce enable"

When I enabled TRIM for my MacBook Pro with 1TB Samsung 840, I used "sudo trimforce enable"

The only TRIM problem I have ever hear of had to do with Linux and using queued TRIM entires. macOS does not use this form of TRIM, and I have not heard of anyone complaining about TRIM doing anything to their 3rd party SSD's.

But having a backup, and keeping it current until you are comfortable, would be a good idea.

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