I'm running Ubuntu 10.04 and
lshw shows a "SAMSUNG SSD UM41". Thanks to SU, I determined previously that my system isn't using TRIM.
- my BIOS SATA settings should say AHCI (check)
- kernel .28+ supports it (using .32)
- ext4 supports it (using ext4)
- my disk manfuacturer says I support it
hdparm -I /dev/sdashould say that I'm using TRIM (fail! using hdparm 9.30)
How do I determine what's preventing TRIM from being used, and how might I remedy this?