Zesko
7
There are two possible ways to determine if your SSD supports Trim/Discard
$ lsblk --discard
If DISC-GRAN and DISC-MAX are not 0, that means your SSD supports it.
$ sudo fstrim --all --dry-run --verbose
It automatically detects if your SSD and some official filesystem support it.
Note
If you use encryption LUKS on your SSD, but Trim/Discard is disabled for LUKS by default.
You can manually enable it.
For internal SSD:
For any external SSD via USB:
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