A magnetic disk cartridge comprising a housing in which a magnetic disk is rotatably
housed. The housing has upper and lower openings through which magnetic heads provided
in a disk drive are positioned over both sides of the magnetic disk. The magnetic
disk cartridge further comprises upper and lower shutters for exposing both sides
of the magnetic disk through the upper and lower openings. The housing comprises
a lower shell, and an upper shell which is fitted inside the lower shell from above.
All components are assembled into the magnetic disk cartridge while being stacked
within the lower shell.
