System and method for correcting for head tilt in HDD

A hard disk drive (HDD) comprising:

• at least one rotatable disk;
• a head stack;
• and
• at least one HDD controller controlling the head stack and undertaking at least one of:
• ordering commands in a queue, or prepositioning a target head before electrical contact therewith is made, based at least in part on a mechanical tilt between the head stack and at least one disk.

A HDD comprising:

• a disk stack;
• a head stack;
• and
• a controller determining a mechanical tilt based on a difference between a current head position and a target head position and undertaking at least one of:
• using the difference to determine a physical seek distance useful for determining an estimated access time (EAT), or using the difference to preposition a target head prior to making electrical contact with the target head.