I cannot refresh or repair my windows 8

[omidelf]

Hello guys
im Trying to repair my windows 8 because after installing xp , i cannot boot windows 8 anymore
and i used my windows 8 dvd to repair it , but when i press repair or refresh your pc , it says : This option is not supported on the operating system you selected


why is this happening ?

 

[rgd1101]

you did it wrong.
http://www.intowindows.com/how-to-dual-boot-windows-8-and-xp/
old os before new os.

 

[omidelf]

you did it wrong.
http://www.intowindows.com/how-to-dual-boot-windows-8-and-xp/
old os before new os.

what should i do now ?

 

[rgd1101]

backup your windows 8 data, and reinstall.