Before a disk drive can access any sector record, a computer program has to provide the record’s disk address. What information does this address specify?

A disk address specifies the exact location of a sector on a disk drive. This address typically includes several key pieces of information:

1. Cylinder Number: This indicates the track or circle on which the sector is located and is related to the physical organization of the disk.
2. Head Number: This specifies which read/write head is being used, particularly important in multi-platter drives.
3. Sector Number: This identifies the specific segment within a track that corresponds to the actual data being accessed.

Together, this address allows the disk drive to accurately locate the desired data on the physical medium.