Apple IIe - Page 177

Cassette and Disk Storage with the Apple lie 177
the various sectors is determined by counting the number of
holes occuring after the first sector. A hard sectored diskette is
depicted in Illustration 5-4.
Soft sectored diskettes have
only one index hole as shown in
Illustration 5-5. This solitary index hole marks the location of the
first sector. By timing the rotation speed of the floppy diskette,
the location of the other sectors can be determined . The Apple
lie Disk System uses soft-sectored diskettes.
Illustration
5-4. Hard Sectored Diskette
2
Index Holes
Illustration
5-5. Soft Sectored Diskette
Index Hole