Patent ID: 6959443

Claim:
A removable disk drive apparatus, comprising: a tray on which a plurality of concave portions for a disk for supporting disk storage media having different diameters are formed in concentric positions, wherein said tray comprises: larger disk support lugs provided at plural points on a periphery of a concave portion for a larger diameter disk; and smaller disk support lugs provided at plural points on a periphery of a concave portion for a smaller diameter disk; said smaller disk support lugs including: a storage groove provided at a plurality of points on the periphery of the concave portion for a larger diameter disk; flexible lugs with elastic deformation supported in said storage groove, and having tip portions projecting into the periphery of the concave portion for a smaller diameter disk; and a stopper to keep the tip portions of the flexible lugs projecting above a surface of the periphery of the concave portion for the smaller diameter disk from the storage groove.