Nice story, bro.
Shame there's no mechanism to make it work as told.
The linear motor is fast, true, but it has no power to speak of. It also has practically zero mass compared to the disk pack. A stack of ten of those platters weighs probably 1,000 times that of the entire R/W assembly ... and you'd have to fling them all at the same time because the disks are fixed together so the drive only needs to read a single sector indexing.slit (cut into the bottom hub) for the entire stack.
Biting the hand that feeds IT
