June 30, 2015, macrumors.com: Mac OS X 10.10.4 Supports TRIM for Third-Party SSD Hard Drives Citat: "...To enable TRIM, a user just has to type "sudo trimforce enable" into the Terminal window. Ars Technica points out that running TRIM prompts a "scary" message from the system, but notes it's largely because each SSD implements TRIM in a different way, with older disks sometimes acting in a way OS X would not expect..."