Patent ID: 8570681

Claim:
A hard disk drive system comprising: a first channel module configured to receive a first data from or transfer the first data to a first amplifier module of a hard disk assembly when reading from or writing to a first surface of a disk of the hard disk assembly, wherein the first channel module is configured to write a first portion of a first sector on the first surface of the disk; and a second channel module configured to receive a second data from or transfer the second data to a second amplifier module of the hard disk assembly when reading or writing to a second surface of the disk while the first channel module receives the first data from or transfers the first data to the first amplifier module, wherein the second channel module is configured to write a second portion of the first sector on the second surface of the disk, and wherein the second portion is different than the first portion, and wherein, when the first portion of the first sector written on the first surface of the disk is defective, the first channel module is configured to recover the first portion of the first sector on the first surface of the disk based on the second portion of the first sector written on the second surface of the disk.