Osim ako na tom drugom OS-u nisi administrator pa ima neka lozinka ili nesto.
Ja sam admin na oba OS-a ali kad odem na particiju na kojoj mi je instaliran Xp i udjem recimo u Document and settings dobijam sledecu poruku: "You don't currently have permission to access this folder" , "click Continue to permanently get access to this folder" i kad kliknem Continue poruka "accesss deined"