……. is the science of magnetic phenomena and properties.

Floppy and hard disks are considered as ……. storage devices.

Data is recorded on a disk in the form of …… spots called bits.

All disks must be initialized before information can be ……. onto them.

The ……. heads follow the tracks and magnetize the coating along each track.

A disk drive works very much like a tape ……. that can both play and record.

In a .……. disk, a file is stored in non- contiguous sectors.

In a …… disk a file is stored in neighbouring sectors.

After you create, delete and modify a lot of files, the hard disk becomes ……. with bits and pieces spread all over the disk.

To reorganize your hard disk, you can use a disk optimizer or …….; this will reorder your files into contiguous clusters.