Hi v1234. It depends on your laptop, but most of them with two hard drive slots usually have the RAID option in the BIOS (you'll just have to check). You should make sure your slots are in RAID mode in the BIOS, and then you may have to boot to your RAID controller to set up the RAID. Just remember to get the same capacity drive as yours. And backup your data before you start with this, just to be on the safe side.
Hope that helps.
Boogieman_WD