How the data is recorded on the disk and then retrieved from the hard disk? Explain.

The data is recorded on the disks through the read-write head, which resembles a record player. The information that comes from the CPU is recorded digitally (in the form of 0 and 1) on the disk surface through the read-write head. On the other hand, the information is also retrieved digitally from the disk through the read-write head to the computer system for further processing.