How to use trim command ?

[Masachika ISHIZUKA]

>>   I'm using FreeBSD 13.0-CURRENT r341327.
>>   I want to use trim command.
> 
> It seems this partition is in use (mounted?) and GEOM won't allow to write
> to opened partition, you need to close it first (unmount).
> Be warned: trim will destroy all data in the partition.

  Thank you for reply.

  I misunderstood trim was equivalent to fstrim in linux.
  I undotstood that the trim command is the SSD bulk erase tool.
-- 
Masachika ISHIZUKA