Ma jb be u.s.apny cmputr lagata ho or kuch data copy karta ho or u.s.b kisi or kisi or system pa lgao to data copy be ni hota or aa jata formet disk.to u.s.b ko formet hi karna prta ha or koi option ni ha.or jitni br be lgao asa hi hota ha.or agr is u.s.b ko kisi or systm ma lgao to tb thk chalti ha.jis systm ki wja sa asa howa ha usy ful formt yani sb partition ko formt kr ka be dakh lia.mgr fr woi msla