The present invention relates to a disc data storage apparatus with a structure for preventing cracked discs from jetting out. The disc data storage apparatus has a tray for receiving a disc, a cover and a housing. The cover has a first portion and a second portion. The first portion is connected to a front flange of the housing, and the second portion is extended into the housing to form a barrier portion. When a disc cracks, the barrier portion is configured to stop and prevent the cracked disc from jetting out.

 
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