CLV instead of CAV II
The CLV format is responsible, in large part, for the poor seeking performance of CD-ROM Drives: there is no straightforward way to jump to a location. Part of the problem is the need to change rotational speed.
To read the address info that is stored on the disc along with the user’s data, we need to be moving the data under the optical pick up at the correct speed. But to know how to adjust the speed, we need to be able to read the address info so we know where we are. How do we break this loop? By guessing and through trial and error ==> Slows down performance.