The OS Accident

Last night I tried installing Windows XP on a partitioned part of my hard drive.

I put in the Windows XP disk in and rebooted, so I could install Windows XP without entering Windows Vista. I chose to install XP on drive F, thats the partition I made specifically for XP. So XP installed and I was proud and happy of myself, but not for long. After the installation was complete, I rebooted. I didnt see the Windows Boot Manager screen come up. I had then realized what I have done, I had installed Windows XP over my Windows Vista! It was a terrible mess.
I have had expirience with dual booting because I have a dual boot with Linux and Windows Vista.
I went to sleep and didnt mess with it that night. The next morning my dad wakes me up and asks me for my computer password. I tell him, then I walk into my computer room and see that Vista is working correctly. I didnt care about XP anymore. Well, the lesson has been learned.