Now for my next idea.
HEY SOMEBODY STICK A SOCK IN MY MOUTH!!
Ok, now for the next idea.
GET RID OF ROUND MEDIA.
In Rich's drive of the future there is no media movement.
It is square, 3.5", 20 layers, huge capacity
The motor will be replaced by a motor just like a scanner motor in a HP 2P (and dozens of other models) laser printer.
The scanner motor is the thing you always heard whinning up when an HP would warm up.
The scanner motor will do the rows and a mirror on a pivot will change to the next row.
The scanner motor will suffer no media wobble. It will last years. The mirror that does the 2nd and last part of the laser placement would move with the ease of hard disk heads.
The only thing that I don't know about is focus.
Is it necessary to focus it right at the surface of the media? Or can it be focused at the laser lense and then beamed a couple inches?
Also the mirror would have to be of special quality to take the wear of the laser.