To convert Vista to XP my laptop can't recognise hard disk

[sazu66]

To convert Vista to XP my laptop can't recognise hard disk

 

[fjmfreitas]

XP usualy needs a floppy disk (yep, not kidding) with the necesary drivers to use in some non-standard drives (happens with raid arrays, some sata drives, and notebooks (my HP pavilion DV4 notebook is not recognised either))

There is a program to insert these necessary drivers into a win XP install disk, by making a custom install disk. I never used this method myself, google custom XP install disk you should be able to find what i'm talking about.

the program's name is nLite, and here is a small tutorial that might solve your problem:

http://www.howtogeek.com/howto/windows/resolving-setup-did-not-find-any-hard-disk-drives-during-windows-xp-installation/

I hope this helps =)