How long does it take to read a disk with 3000 cylinders, each containing five tracks of 2048 sectors? First, all the sectors of track 0 are to be read starting at sector 0, then all the sectors of track 1 starting at sector 0, and so on. The rotation time is 12 msec, and a seek takes 11 msec between adjacent cylinders and 20 msec for the worst case. Switching between tracks of a cylinder can be done in 2 msec.