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I have recently (half an hour ago) managed to change my SSD from IDE to AHCI mode. This should also enable TRIM, which in itself can also improve performance, right?

How long should it now take before I start seeing the effect from TRIM?

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TRIM commands will be issued immediately. However, space that is logically empty on the drive that hasn't been TRIMmed won't ever get trimmed until that space is used and then made free again.

If you want to force it, just find the largest file you can and make copies of it until your drive is full. Then delete all those copies. Since TRIM is now enabled, the free space will be TRIMmed when you delete the copies. There are tools to do that automatically too.

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  • Interesting tool! So, how long will it take before I see any effect? Is it a matter of minutes, hours, days, weeks? May 7 '12 at 19:13
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    It depends. TRIM runs in the background, for obvious reasons. If you leave the machine running overnight, it should have run by the following morning.
    – user3463
    May 7 '12 at 19:55

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