fixed disk

from WordNet (r) 3.0 (2006)
fixed disk
    n 1: a rigid magnetic disk mounted permanently in a drive unit
         [syn: {hard disc}, {hard disk}, {fixed disk}]
    
from The Free On-line Dictionary of Computing (8 July 2008)
fixed disk

   <storage> A {hard disk} which is not a {removable disk}.
    

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