TRIMFORCE(8) System Manager's Manual TRIMFORCE(8)

trimforceenable TRIM commands on third-party drives

trimforce verb

trimforce enables sending TRIM commands to third-party drives attached to an AHCI controller. By default, TRIM commands are not sent to third-party drives. Use extreme caution when enabling TRIM, as some drives may not correctly handle the commands. trimforce must be run by the system administrator.


Start sending TRIM commands to AHCI-attached third-party drives. Requires a reboot to take effect.

Stop sending TRIM commands to AHCI-attached third-party drives. Requires a reboot to take effect.

Display brief usage syntax.

trimforce will exit with status 0 if successful, or with an appropriate error if it cannot parse input, allocate memory, or is unauthorized to perform its work.

The trimforce utility first appeared in OS X 10.10.4.

27 April 2015 OS X