Dual Boot Vista<>Xp Pro
 

I have a Dual Boot and Vista working ok, but XP Pro sudenly with Error.
I Canot Run XP Repair' so first I want canceld the Dual Boot and secondly make XP Pro coming on.
I think than I can repair XP.

Any sugestion?

What is the error you are recieving?
A detailed description of it, and when exactly you recieve it may help in fixing it without removing your dual boot.

There is always the option of formatting the partition and re-installing XP, but if it can be saved, it is often a good idea to at least try that first.