sector
prof for answer; a sector is a division of a storage medium on a hard drive diskette that is a wedge shaped section of one of the circular tracks
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a computer
A hard disk acts as a storage device for data. Data is also retrieved from the hard disk. The data that is kept in the hard disk is not erased even when the computer is switched off.
is it a lens !!
A: or B: drive is usually a floppy disk. These are becoming rare. C: drive is usually the main hard disk. D: drive is the second hard disk if any. E: drive is usually an optical or CD or DVD drive F: G: H: etc. drive may be a USB "thumbdrive" or an external disk.
A hard disk is the physical medium information storage device of most computerized systems. It is an actual disk that rotates at high speed. The surface is coated with magnetic material, and data is stored magnetically on the surface. A tiny read/write head on the end of an arm that can move over the surface of the disk does the reading and writing to transfer the information to and from the medium.