Logical Formatting
Formatted disk capacity is always less than the nominal capacity provided for each type of disk. Leaving some space empty between sectors and tracks provides some more reliability by preventing bits from being stored too close together in the magnetic film.
Most common floppy disks in use are formatted in the FAT12 file system format, though sometimes disks may use a more exotic file system and/or be superformatted to accommodate slightly more data. Some floppy-based Linux distributions utilize such techniques. The capacity numbers given in this section assume FAT12 formatting unless otherwise noted.
Read more about this topic: Floppy Disk Format
Famous quotes containing the word logical:
“A picture whose pictorial form is logical form is called a logical picture.”
—Ludwig Wittgenstein (1889–1951)