I had multiple problems doing this dual boot install but this morning XP worked fine but could not boot vista. So I reinstalled vista using my hp restore disc now vista works fine but I can't boot XP from Ebcd. It says ntdetect missing from c:\ It originally said both ntdlr and ntdetect were missing but I downloaded them from this site added them to the C: drive then was unable to load anything until I ran repair,now I am back in Vista but it removed ntdetect from c:. My Computer lists my drives as C:\ HP (Vista OS) a partition named D:Factory Image and on a seperate sata drive E:\ Windows XP. When I tried to repair from the XP disc it recognizes the XP install as D:\ I tried to copy the missing files from the install disc to that dir but even with admin privileges it said access denied. Any ideas?