Bernoulli Drive.

Bernoulli Drive.

Spindle Read / write head.

1 - When the flexible material that comprises the internal disk cartridge Bernoulli is at rest, the hard stoops
naturally, away from the head read / write drive.

2 - When the drive shaft (spindle) starts to spin the disk, the movement pushes the air into the opening in the
flat surface to the upper disc. The air beneath the disc, being practically stable, has
greater pressure against the bottom of the disk that the pressure exerted by moving air above it. This difference in pressure
makes the hard climb towards the surface. The same effect on the Bernoulli increases when the head
read / write protruding through the surface, causing the disc even closer it.

3 - The disc does not touch the head because the stationary flat surface creates an air barrier between the head and the disk. The
opposing forces that promote the lifting and air barrier causes the disk is stabilized at 10 millionths
inch head read / write closer than the distance between a conventional hard disk and a head
read / write.

4 - If there is any possibility of any damage to the hard drive - such as lack of energy or strong vibration
unit - the unit disc Bernoulli down a bit, moving a safer distance in relation to the head
read / write, thus reducing the chances of the disc touching the head and damage the surface layer of magnetic film
in which data is stored.

Source: Evolution of Computers