This helps ensure that all storage cells are aged uniformly and maximum lifetime achieved. The SSD doesn’t need to immediately delete or garbage collect these locations it just marks them as no longer valid. This results in a reduction of the number of erase cycles on the flash memory and enables higher performance during writes. The advantage of the TRIM command is that it enables the SSD’s GC (garbage collection) to skip the invalid data rather than moving it, thus saving time not rewriting the invalid data. Safe Mode does a Disk Repair and honors this trimforce command, effectively removing all the old deleted data. TRIM will release deleted blocks, It is recommended once enabled do a restart into SafeBoot Mode (hold the Shift key.) Once you make the choice stick with it ie you do not want to be flipping back and forth as this will lead to data corruption.Īlways advised to have a back up plan in place. Probaly less important on a brand new SSD, and one that has plenty of free space. You have to come to your own conclusions.

Enable trim mac os x 10.7.5