Abstract: An apparatus and method for controlling a disk drive is provided. A disk lubricant sweep component for periodically initiates a disk lubricant spreading action. A disk data read check component checks data at one or more LBAs during the disk lubricant sweep. The apparatus may cache data from LBAs that have been checked by the disk data read check component and found correct and record LBAs that have been found correct, so that they can be omitted from subsequent operation of the read check component. The apparatus may further comprise an error checking and correcting component for checking and correcting data found incorrect by reason of a soft error, and an error reporting component for reporting on one or more LBAs that have been checked and found incorrect by reason of a hard error.