The motor in a computer's hard drive usually uses direct current. In order for the motor to rotate, the power supply needs to be connected to the positive and negative poles of the motor. Typically, the motor of a computer's hard drive is controlled by a control chip on a circuit board that sends a signal to the motor to start turning when the computer starts. In addition, the motor also needs the appropriate voltage and current to provide enough power to smoothly rotate the hard disk platters.
Hard disk motors are generally 12V external rotor brushless motors. Power cannot be used directly, drivers must be used. You can buy a brushless power controller or use the circuit board driver on the original hard drive, or you can use the brushless power controller on the model plane.