How to install the xp in sony notebook PC
 

i formatted my hard disk using bootable dos cd.
when i tried to install xp sp2 in sony via notebook which already had vista using cd it displayed a message after detecting all
the hardwares .
i pressed the enter button to install fresh copy of windows xp.
The very next screen shows this exact error message.


"setup didnot find any hard disk drives installed in ur computer

Make sure any hard disk drives are powered on and properly connectd and that any disk realated hardware configuration is correct This may involve running a manufacturer supplied diagnostic or setup program.

setup cannot continue .to quit setup press F3."

what to do.
should i install any scsi or raid drivers?