Origin of "partition" in storage devices

[Paul Berger]

On 2022-02-01 14:09, Glen Slick via cctalk wrote:
> On Tue, Feb 1, 2022 at 10:04 AM Paul Koning via cctalk
> <cctalk at classiccmp.org> wrote:
>>> Slower on the outer tracks, I believe.  CDs work this way.
>> I suspect CLV was invented for CDs, in fact.
> Which came first CLV CDs, or CLV LaserDiscs?

How about CLV diskettes as used in the Victor 9000 that changed 
rotational speed several times to obtain higher capacity on 5.25 
diskettes.  I wonder how long it took to settle after stepping over a 
speed change boundary.

Paul.