I recently tried to reinstall windows xp, but the installation was interrupted and left me with a partially installed windows on my hard drive. Now, whenever I try to install again, it gives me the error: NTLDR is missing. I made a msdos boot disc to reformat my drive such that I can try installing windows again. However, I have two hard drive (one for windows and programs and one for storage) and I don't know which one is which letter. How can I find this information, so that I don't accidentally wipe my storage drive?