In addition, CD-ROM players are capable of playing audio CDs, which share the same technology. This includes color large software applications, graphics, sound, and especially video. However, multimedia applications require vast amounts of storage space - this is where DVD disc technology is more suitable. A hard disk is a magnetic disk on which computer data can be stored. The term 'hard' is used to distinguish it from a soft, or 'floppy' , disk.
Hard disks hold more data and are faster than floppy disks .
A hard disk, for example, can store anywhere from 10 megabytes to several gigabytes, whereas most floppies have a maximum storage capacity of only 1.4 megabytes. Their greater capacities and access rates make hard disks good for storing multimedia information. A magneto-optical disk combines magnetic disk technology with CD ROM technology. Like magnetic disks, Magneto-optical disks can be read and written to. Like floppy disks, they are removable.