I have two drives in my computer both of which have Windows XP upon them. However I have just reinstalled the OS to my smaller drive. Windows sees both drives and can access both however my larger drive does not appear as a boot option which means all the time I have spent setting up and installing is gone. I cant find a way to set this drive as bootable and it just shows up in disc manager as healthy(active) I have tried diskpart and MBR command therein but to no avail . Please help me return to blissful computing!