▁one ▁of ▁the ▁DVD ▁drive , ▁and ▁the ▁one ▁of ▁the ▁player ▁software ▁( occ asion ally , ▁the ▁player ▁software ▁has ▁no ▁region ▁counter ▁of ▁its ▁own , ▁but ▁uses ▁that ▁of ▁Windows ). ▁After ▁the ▁fifth ▁region ▁change , ▁the ▁system ▁is ▁locked ▁to ▁that ▁region . ▁In ▁modern ▁DVD ▁drives ▁( type ▁R PC - 2 ), ▁the ▁region ▁lock ▁is ▁saved ▁to ▁its ▁hardware , ▁so ▁that ▁even ▁re install ing ▁Windows ▁or ▁using ▁the ▁drive ▁with ▁a ▁different ▁computer ▁will ▁not ▁un lock ▁the ▁drive ▁again . ▁ ▁Un like ▁DVD ▁regions , ▁Bl u - ray ▁regions ▁are ▁verified ▁only ▁by ▁the ▁player ▁software , ▁not ▁by ▁the ▁computer ▁system ▁or ▁the ▁drive . ▁The ▁region ▁code ▁is ▁stored ▁in ▁a ▁file ▁or ▁the ▁registry , ▁and ▁there ▁are ▁ha cks ▁to ▁reset ▁the ▁region ▁counter ▁of ▁the ▁player ▁software . ▁In ▁stand - alone ▁players , ▁the ▁region ▁code ▁is ▁part ▁of ▁the ▁firm ware . ▁ ▁For ▁by pass ing ▁region ▁codes , ▁there ▁are ▁software ▁and ▁multi - reg ional ▁players ▁available . ▁ ▁A ▁new ▁form ▁of ▁Bl u - ray ▁region ▁coding ▁tests ▁not ▁only ▁the ▁region ▁of ▁the ▁player / player ▁software , ▁but ▁also ▁its ▁country ▁code . ▁This ▁means , ▁for ▁example , ▁although ▁both ▁USA ▁and ▁Japan ▁are ▁Region ▁A , ▁some ▁American ▁disc s ▁will ▁not ▁play ▁on ▁devices / software ▁installed ▁in ▁Japan ▁or ▁vice ▁vers a , ▁since ▁the ▁two ▁countries ▁have ▁different ▁country ▁codes