;       Media
;     Descriptor  Commonly used media
;       0F0h      3.50", 2 sides,18 sect/track,80 tracks/side (1.44 MB)
;                 3.50", 2 sides,36 sect/track,80 tracks/side (2.88 MB)
;                 5.25", 2 sides,15 sect/track (1.2 MB)
;                 (also used for other types)
;       0F8h      Hard disk, any capacity
;       0F9h      3.50", 2 sides, 9 sect/track,80 tracks/side (720K)
;                 5.25", 2 sides,15 sect/track,40 tracks/side (1.2 MB)
;       0FAh      5.25", 1 side , 8 sect/track,80 tracks/side (320K)
;       0FBh      3.50", 2 sides, 8 sect/track,80 tracks/side (640K)
;       0FCh      5.25", 1 side , 9 sect/track,40 tracks/side (180K)
;       0FDh      5.25", 2 sides, 9 sect/track,40 tracks/side (360K)
;                 (also used for 8" disks)
;       0FEh      5.25", 1 side , 8 sect/track,40 tracks/side (160K)
;       0FFh      5.25", 2 sides, 8 sect/track,40 tracks/side (320K)
;                 (also used for 8" disks)