My raspberry has the "boot" folder in the SD card, but all the system runs in a SSD connected in a usb port. I am running a web server and a mail server in this SSD.
Now all runs fine, but... i think that i must enable TRIM or something similar to extend the life of the SSD. I put the SSD in a standard hard drive enclosure for 2.5 drives. ¿Can I enable TRIM in this drive?
If i do lsblk -D I can see this, but i don't know if trim is enabled (I suppose that it is not enabled).
NAME DISC-ALN DISC-GRAN DISC-MAX DISC-ZERO
sda 0 0B 0B 0
└─sda1 0 0B 0B 0
mmcblk0 0 4M 428M 0
├─mmcblk0p1 0 4M 428M 0
└─mmcblk0p2 0 4M 428M 0