Floppy Disk
Floppy Disk :-
- Alan Shugart created floppy disk drive.
- External storage device.
- Stores data on magnetic surface.
- Used for transferring data from one computer to another.
3.5 inch Floppy Disk
- 3.5 inch had a high density and could hold 720 KB of data and then density increased to hold 1.44 MB of data.
- Has two holes at the bottom of the disk. One enables to identify if floppy disk has a low density or high density and other is a write protect tab
Write Protect Tab
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- Protects data from being accidentally modified or erased
- Sliding the switch down makes the floppy disk read only
- Sliding the switch up enables data to be read and written to the floppy disk
Types of FDD
- 3.5 Inch FDD - Floppy drive spins the floppy disk at a speed of 300 rotations per minute
- USB FDD - The USB FDD is a slim type floppy disk drive (FDD) with a Universal Serial Bus (USB) interface
Calculation of 1.44 MB
- The total unformatted size of the floppy disk can be calculated as:
- = 2 (number of tracks * number of sectors * size of each sector in a track)
- = 2 (80 * 18 * 512)
- = 1,474,560 bytes i.e. 1.44 MB
Configuring the Floppy Disk Drive
- Assign a drive letter A: and B: to the floppy disk drive using the data cable
- Configure system BIOS to detect the installed floppy disk drive
Formatting a Floppy Disk
- You must format a floppy before using it.
- Formatting a floppy creates tracks and sectors on the floppy disk.
- Formatting wipes out all the data stored on it so copy the data to a different location before formatting.
Troubleshooting the Floppy Disk Drive
- Floppy disk drive may have some problems which can corrupt the floppy disk
- Problems that may occur if the floppy disk drive is damaged are:
- Can not detect the Floppy Disk Drive
- Unable to read and write data to the Floppy Disk
- Cleaning floppy drive using FDD cleaning kit
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