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UrsaMinor

macrumors member
Original poster
Mar 2, 2018
46
12
Hello.

I wasn't sure what forum to post this in.

When replacing a mechanical drive with a SSD, should one find out if the SSD supports trim before enabling trim?

Also, I believe I read an article that trim doesn't have to be enabled, as modern SSD's don't require it. Can anyone confirm that?

The reason I ask, is because a few months ago, I cloned a Macbook's mechanical drive to an ssd, and it booted and ran fine until I enabled trim. Once trim was enabled, I got the dreaded question mark error upon reboot. I had to repeat the clone without enabling trim. I wish I could remember what the SSD's manufacturer was.

Thanks.

EDIT: I found this on Crucial's site:

Trim and Active Garbage Collection are useful tools that can benefit the speed, function, and longevity of your SSD. But if your operating system doesn't support Trim, it's not a disaster. All Crucial SSDs are designed and tested assuming that they will be used without Trim.


EDIT 2. I found the comment from 2 years ago:

For a recent third-party SSD/Flash memory drive, read very carefully whether the storage device vendor recommends, or discourages enabling external TRIM support on their drive. Many are now incorporating TRIM functionality into their drive controllers and enabling external TRIM may offer no advantage at all, and may actually harm the drive.
 
Last edited:
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EDIT 2. I found the comment from 2 years ago:

For a recent third-party SSD/Flash memory drive, read very carefully whether the storage device vendor recommends, or discourages enabling external TRIM support on their drive. Many are now incorporating TRIM functionality into their drive controllers and enabling external TRIM may offer no advantage at all, and may actually harm the drive.
 
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Reactions: hooptyuber
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