Mery pas p4 system hy.main jb my computer main ja kr koi b drve open krta hun(c,d,e,)to woh new window main open hjata hy.main 2 bar ful hard disk format kr chuka hun mgr ub fr us main wahe masla agya hy.us main bht sara data ub format b nhn krskta.plz agr kisi k pas b iska hal ho to plz mre madad krain