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# Difference between Hard Disk and Floppy Disk

### Disk

A magnetic Disk is a disk made up of metal or plastic which is used for storing data. Normally both side of the disc is used for storing data. A magnetic Disk is classified as

in main secondary device Various types of secondary devices are there like floppy disk and hard disk. Hard disk can be considered as being made up multiple floppy disks put one above the other

### Floppy Disk

Floppy disk is made up of round piece of plastic material coated with a magnetized recording material.

The surface of a floppy disk is made of concentric circles called tracks. Disk  can be considered to be consisting of several surfaces, each of which Consisting of tracks.

The tracks are normally numbered from as the outermost track with the number increase inwards. Each track is divided into a no of sectors of equal size Sector capacities may vary, but typically a sector can store up to 512 bytes

• Double-sided floppy have two sides on which data can be recorded, so given sector is specified by a components of address, surface no, track no, and sector no
• Floppy disk is a magnetic disk that contains a single plastic disk. In the initial days of the computer invention it was used as the main storage device, later on, it was used for carrying data from one computer to another but nowadays it is almost not used. It requires a floppy drive for operation.

### Hard Disk

Hard Disk Mechanism

Hard disk surface is also made of concentric circles called tracks. Each track is divided into sectors of equal size. The disk drive for hard disk and its read/write mechanism is shown in fig. (1.3). Read/ write head for each surface connected to arm Arm can move in or out to position itself on any track while disk rotates at a constant speed e.g
Hard Disk is a magnetic disk made of aluminium. It is used as the main storage device on the computer. It uses a metallic disk which is known as a platter. Both sides of the disk are used for storing data except the upper side of the uppermost disk and the lower side of the lowermost disk. Magnetic oxide is used to coat the data storing surface.