I knows it's unbelievable but I seem to have F'ed something up when I upgraded my HTPC drive. I'm don't sure way but XP decided to install system files on the new disk and the MBR on another drive. With the system files on the data drive I figure just moving the MBR to it would work? If not would mounting the MBR on a flash drive work? I know theirs apps for rebuilding a damaged MBR but not sure if they could write one. The drives are both sata the data drives a 1TB samsung and the others an older sata 160GB WD.