Patent ID: 8909889

Claim:
A disk drive comprising: a disk configured to spin at a target spin speed and store first data for servicing host commands; a servo core configured to access the disk and initiate spinning of the disk; a first non-volatile memory configured to store a first initialization firmware and second data for servicing host commands; a second non-volatile memory configured to store a second initialization firmware; a first volatile memory; a second volatile memory; a non-volatile memory core configured to access the first non-volatile memory and load the first initialization firmware from the first non-volatile memory to the first volatile memory; and a main core configured to: load the second initialization firmware from the second non-volatile memory to the second volatile memory concurrently with the loading of the first initialization firmware from the first non-volatile memory to the first volatile memory by the non-volatile memory core; control the servo core to initiate spinning of the disk; and communicate with the non-volatile memory core to service host commands from the first non-volatile memory when the disk is not spinning at the target spin speed.