I have a laptop, Acer Aspire 5310

Windows Vista is installed on it.

i want to install windows xp on it. but it can not find the hard disks.

where can i find these sata drivers and how can i add them to my computer to recognize the hard disk.

many tthanks

You can find sata drivers on official page of manufacturer which made your disk. And you will probably need to put it on a floppy and during loading of XP setup files (blue screen) at the very begin you need to press F6 and then to load drivers from floppy. If you don't have a floppy then you can use nLite to integrate your drivers in it.

Cheers

actually they are not from the disk manufacturer but rather the disk controller manufacturer. Check your vista device manager and see what device the hard drives are connected to then find the drivers from the manufacturer for your device. Then if you have a floppy (not likely since the machine came with vista and it being a laptop) you can put them on the floppy and press F6 when you boot from floppy. Or you could slipstream the drivers into the XP source as textmode drivers. The third option is to check the systems bios and see if there is a compatibility setting for the SATA controller and change it from native to compatibility mode and see if the drive is seen then.