A disk is a storage medium commonly used for storing and retrieving data, such as files, documents, photos, videos, and software programs.
There are different types of disks, including hard disk drives (HDDs), solid-state drives (SSDs), floppy disks (which are now largely obsolete), CD-ROMs (compact disc read-only memory), DVDs (digital versatile discs), and Blu-ray discs (high-definition optical discs).
Disks have different storage capacities and speeds depending on the technology used and the intended application. They are widely used in various devices such as personal computers, laptops, servers, gaming consoles, cameras, and audio players, among others.