There are many more sectors on an optical disc than on a magnetic disk of the same area.

Question

Quizplus · Accepted Answer

This is because optical discs use a different method of recording data, using microscopic pits and lands that are read by a laser. Magnetic disks use a magnetic field to record data on a spinning platter. The pits and lands used on optical discs can be much smaller than the magnetic domains used on magnetic disks, allowing for more sectors to be placed on the disc.

There Are Many More Sectors on an Optical Disc Than