Samat :
If your installed OS supports TRIM it should normally run automatically when the system is idle. And yes OS sends the TRIM command to the drive which then performs the function. If you install the software from your SSD manufacturer it should also have the option to manually run the TRIM command.
Ok so i got mint 13 on my desktop, trim enabled, later on i install a few packages and it messes up my system. I have my os backed up how i liked it before so i then re install it, will trim still be enabled?
Regards jon