7.1- Disk Structure In Operating System In Hindi | Disk Structure In OS In Hindi |

Disk Structure In Operating System In Hindi | Disk Structure In OS In Hindi |
Magnetic Disk Structure
In modern computers, most of the secondary storage is in the form of magnetic disks. Hence, knowing the structure of a magnetic disk is necessary to understand how the data in the disk is accessed by the computer.
Magnetic Disk
Structure of a magnetic disk
A magnetic disk contains several platters. Each platter is divided into circular shaped tracks. The length of the tracks near the centre is less than the length of the tracks farther from the centre. Each track is further divided into sectors, as shown in the figure.
Tracks of the same distance from centre form a cylinder. A read-write head is used to read data from a sector of the magnetic disk.
The speed of the disk is measured as two parts:
Transfer rate: This is the rate at which the data moves from disk to the computer.
Random access time: It is the sum of the seek time and rotational latency.
Seek time is the time taken by the arm to move to the required track. Rotational latency is defined as the time taken by the arm to reach the required sector in the track.
Even though the disk is arranged as sectors and tracks physically, the data is logically arranged and addressed as an array of blocks of fixed size. The size of a block can be 512 or 1024 bytes. Each logical block is mapped with a sector on the disk, sequentially. In this way, each sector in the disk will have a logical address.
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disk structure in operating system | disk structure in operating system in hindi | disk structure in os | disk structure in os in hindi |
disk structure | disk structure in hindi |
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[@karanjotsinghsahota9310]

QUICK AND GREAT EXPLANATION SIR THNKS

[@vikramnena4648]

Very helpful video 👍

[@ajayvarma86]

loved the video...

[@tutorialsspace]

thanks and pls like and share as well

[@mr.sandy0311]

Sir agar hum bich wali platter ko agar 1st me lga de toh kya hoga please reply

[@daxeshsoni4842]

Outer track is more data store than inner track in hard disk?

[@sameerlone6612]

As per the logic, outer most track is bigger that inner most track, it should store more data than any other track on the platter.

[@ameyamahadevgonal8130]

hats off to the edit...

[@tutorialsspace]

thnks

[@neha0376]

6:58 head doesn't rotate..disk rotates to the desired sector
Head only selects a track by moving back n forth

[@ankitathakur5989]

Thanku so much sir ji

[@tutorialsspace]

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[@mahetabkhan6955]

Sir head ghumta hai ya platter ghoomta hai spindle motor ki help se

[@victory_life128]

Head nahi ghumta

[@godrushergaming5851]

Pdf Ka link send kro plzzz sir

[@kiranbooraclasses9]

Track ,sector or golakar kiski shape circular hai

[@kiranbooraclasses9]

Kedrit circle me

[@tutorialsspace]

ok

[@MrJitender91]

Sir seek time and rotational latency m difference samajh ni aaya

[@neha0376]

Seek time is the time taken by the head to move towards the desired track