A method of manufacturing a disk drive and a disk drive made with such method
where
the width of the read element and the width of the write element are both measured
at servo-writing time and the track pitch of the disk drive is set on the basis
of those measurements. Disk drives with superior head width combinations are servo-written
with a narrower track pitch in order to have a higher storage capacity. Disk drives
with inferior head width combinations are detected before servo-writing so that
the disk drive may be servo-written with wider track pitch rather than with a nominal
track pitch that results in a subsequent drive failure during initial burn-in (IBI).
The heads are used more efficiently in that heads that are more capable are used
to their ability and less capable heads that would otherwise be disposed of are
used at all. Fewer disk drives are required to be reworked and returned to the
servo-writing process.
