Riiight, Got my new hdd sat here, but I cannot boot up my PC to back up the existing data! the boot.ini file is damaged, get the blue 'unmountable_boot_volume' screen on startup, had this before, use the windows cd to repair the file etc, but I cannot get it to boot from the cd? just consistantly get the blue screen! Is there any way I can get it to boot up? Anyway i could install the new hdd, then transfer the data from my old disk onto it? getting slightly desperate now! thanks everybody.