IDE MASS STORRAGE DEVICES

Hard disk is a device where we store huge amount of data permanently. Hard disk is also called as mass storage device. IDE (Integrated Drive Electronics) is types of interface use to connect Hard Disk, CD-ROM device etc.

[Note: - CD is an optical media]

Platters

Inside Hard disk, disk shape structure in which data & information are store called platters. Platters further divided in to concentric circles called as track. Hard disk platters divided in to 2 parts called Sectors and Track.

Each and every track & sectors has numbers. Sector number start from outside to inside. A sector can store 512 bytes of data. Track number always start from 0 (zero) and sector always start from 1. The motor attached with platter is called Splendor motor. Data saved in both side of platters. Hard disk contained read write head. If we have 3 platters it needs 6 read write head because of both sides. A sector is not sharable. Set of the sectors are called as cluster. Track ‘0’, sector number '1' is very important because it is called as boot sector. Boot sector contains MBR (Master Boot Record). MBR contains information about hard disk partition, capacity of each and every partition, small set of code through which processor can recognize bootable partition of hard disk. A partition which having bootable called boot partition. If the Boot Sector is corrupt then the hard disk will not work.