In a computer system, the device driver or operating system is responsible for reading and writing data on disk. When a user or application requests to read or write data on disk, the operating system or device driver accesses the disk controller, which manages the physical disk, to perform the read or write operation.
The disk controller reads or writes data to the disk platters, which are coated with a magnetic material that stores the data in the form of magnetic fields. The read/write head of the disk controller moves over the disk platters to read or write data in the desired location.
The operating system or device driver manages the access to the disk by controlling the read/write head's movement and ensuring that the data is stored and retrieved correctly. The operating system or device driver also manages the file system, which organizes and manages the data stored on the disk, making it easy for users and applications to access and manage their data.
In summary, the device driver or operating system is responsible for reading and writing data on disk by controlling the read/write head's movement and managing the data's storage and retrieval.
