A device used to store information. There are two types of disks. Hard disks are permanent and installed into your computer. Floppy disks are portable and can be inserted into and removed from a floppy disk drive.
— Computer ScienceGeneric term for a type of storage device, such as a- hard disk- or a- floppy disk- (diskette). So called because the important part, where the information is actually stored, is circular, although you can’t see it because it is hidden away inside a protective shell.
— Computer Science