A method for writing servo information to a data storage medium adapted for use
in a data storage device wherein the medium is operably moved in ambient air at
a nominal speed in data reading and writing relationship with a data transfer member.
In one embodiment the method for writing comprises placing the medium adjacent
a data transfer member in an enclosure containing a gaseous environment as a selected
state; moving the medium to impart velocity to the gaseous environment which, in
turn, impacts the data transfer member with forces flying the writing member at
a first fly height from the medium; and subsequently introducing a gas having a
density less than the gaseous environment into the enclosure, thereby responsively
reducing the fly height of the writing member to a selected height less than the
first fly height.
