[Guamani]

This is my scenario. My old XP PC "crashed" (it crashed against my feet while I was kikching it...) But it really was giving some problems with the video card. After the "incident" I tried to repair it but was unsucessfull. So I bought a new one with vista. I needed to recover the data from my old drives so initially I tried to boot the Vista PC from the XP hard disk, by indicating which drive to boot from throug setup. It did not work. My idea was to remove the passwords to freely ascess all the data. So I did try again to start up my old XP pc and was able to get it to work (only on safe mode) and removed some passwords. Then installed the hard disk on the vista system and copied the data. But still could not get some data, like My Documents. While doing this I had to "take ownership" of some folders from my XP hard disk, while ascessing them in Vista.

Now, my questions are: First (and this one is not related to the post) Now I want to work again on the XP system, but after "taking ownership" on vista, these folders are no longer available in XP. I read that you can "reverse ownership" but that was on XP. Is there a way to do it on Vista?

And now, related to the post. How could I perform a Dual Boot with this XP OS that is allready installed in the old Hard Disk? I,ve seen that it can be done by partitioning the HD in Vista and reinstalling XP on that new partition. But how about having it allready installed on a hard disk, as most people might have?