An apparatus and method for latching an actuator arm assembly can position
a read/write head relative to a data storage disk in a disk drive. A
latch arm is configured to be moved between a closed position that
inhibits movement of an actuator arm assembly in a landing zone and an
open position that does not inhibit movement of the actuator arm assembly
in the landing zone. A coil is configured to generate an electromagnetic
force on the latch arm responsive to a coil current. A bias device is
configured to provide a bias force on the latch arm that is substantially
opposed to the electromagnetic force from the coil. The latch operating
current/voltages is controlled and modified according to environmental
conditions such as temperature.